KR101506988B1 - System and method of auto prescription for contact lens - Google Patents

Abstract

The present invention relates to automatic lens prescription and, more specifically, to a system for automatically prescribing a lens, which even when only data on a patient′s eyes is input, computes and displays various kinds of data on lens design suitable for the patient′s eyes automatically and easily to view a variety of data on various types of lenses at a glance, thereby prescribing a lens suitable for the patient. According to a feature of the present invention as described above, an automatic prescription operating system is included, which stores data input from a data input unit to a data storage unit through an input data processing unit and transmits display data to a data display unit. The automatic prescription operating system includes: a spherical design data processing unit configured to read data stored in the data storage unit to compute data on a spherical design lens; an aspheric design data processing unit configured to read data stored in the data storage unit to compute data on an aspheric design lens; and a multifocal design data processing unit configured to read data stored in the data storage unit to compute data on a multifocal design lens.

Description

TECHNICAL FIELD [0001] The present invention relates to a lens automatic prescription system and an automatic prescription system,

More particularly, the present invention relates to an automatic prescription of a lens, and more particularly, various data of a lens design suitable for a patient's eyes are automatically calculated and displayed even if only optometrist data of a patient is input, So that the prescription of the lens suitable for the patient can be made.

In general, the lens is attached to the front of the eye so that the object can be seen clearly, such as using glasses. In the early days, plastic lenses were used. Recently, glass lenses, hard lenses, soft contact lenses and hard contact lenses have been used. In particular, hard contact lenses with oxygen permeability have been widely used.

Spheric lenses, aspheric lenses, and multifocal lenses are used in the form of lenses, which are selected depending on the condition of the patient's eyes and the like.

Especially, since these lenses are attached to the patient's eyes, if used improperly, it may cause irritation to eyes or severe vision may deteriorate. Therefore, proper prescription and use of the lens is important.

It is also important to make the lens suitable for the eye condition of the patient as much as the use of the lens. However, in most of the apparatuses for examining the eyes, the eye condition is accurately inspected, whereas the user prescribes a prescription value for making a lens suitable for an actual eye, so that it is not easy to make a lens with an appropriate lens. Therefore, there is a desperate need for standardized prescriptions for the production of correct lenses.

Patent Application No. 10-1991-0700328 Patent Application No. 10-1991-0001076 Patent Application No. 10-2009-7023908

In order to solve the above problems, it is an object of the present invention to automatically calculate and display various data of a lens design suitable for a patient's eyes, even if only data opted for a patient's eye is input.

It is another object of the present invention to provide various data of lenses that can be designed in various types such as a spherical design lens, an aspherical design lens, a double aspherical design lens, a multifocal design lens, Is automatically calculated and displayed.

It is still another object of the present invention to provide a system and a method for inputting and applying prescription data according to a prescription of a practitioner to data such as a radius of curvature and a refractive power calculated from basic patient optometry data, will be.

It is a further object of the present invention to provide a method and apparatus for displaying various data of a lens calculated by the present invention over a whole display screen of a data display unit, It is possible to prescribe the appropriate lens design.

According to an aspect of the present invention, there is provided an automatic prescription operating system for storing data input from a data input unit through a data input unit and transmitting data to a data display unit, The system includes: a spherical design data processing unit for reading data stored in a data storage unit and calculating data of a spherical design lens; An aspheric design data processing unit for reading data stored in a data storage unit and computing data of an aspherical design lens; And a multifocus design data processing unit for reading data stored in the data storage unit and calculating data of the multifocal design lens, wherein the spherical design data processing unit comprises: a flat- A spherical design curvature operation unit for reading the Steep-K data and calculating curvature radius data of the spherical design lens; And a spherical design power calculator for calculating spherical power (SPH) data, curvature radius data, and meridian meridian data stored in a data storage unit to calculate refractive power data of a spherical design lens, wherein the aspheric design data processor comprises: And an aspherical surface design power computing unit for computing the spherical power (SPH) data, the final radius of curvature data, and the meridian meridian data stored in the storage unit and computing the power data of the aspherical surface design lens, A multifocus design curvature calculator for calculating curvature radius data of a multifocal design lens by reading data stored in a flat-K and a steep-K data stored in the multifocal design lens; And a multifocus design power calculation unit for calculating spherical power (SPH) data, curvature radius data, and meridian meridian data stored in a data storage unit to calculate refractive power data of a multifocal design lens, And a value of a radius of curvature corresponding to a range of a flat-K and a corneal astigmatism (CYL) of an aspheric flatting card.

으로 되고,
상기 구면디자인렌즈의 굴절력(distance power) 데이터는,

으로 되며,
상기 비구면디자인렌즈의 굴절력(distance power) 데이터는,

으로 되고,
상기 다초점디자인렌즈의 곡률반경(base curve) 데이터는,

으로 되며,
상기 다초점디자인렌즈의 굴절력(distance power) 데이터는,

으로 되고,
상기 구면디자인렌즈에 대한 굴절력에서 근사치 곡률반경(Base curve)은 상기 구면점디자인렌즈의 곡률반경(base curve)의 연산값에 대해 소수점둘째자리에서 반올림한 값이며, 상기 다초점디자인렌즈에 대한 굴절력에서 근사치 곡률반경(Base curve)은 상기 다초점디자인렌즈의 곡률반경(base curve)의 연산값에 대해 소수점둘째자리에서 반올림한 값인 것을 특징으로 하는 렌즈자동처방시스템을 제공한다.Therefore, in a preferred embodiment of the present invention, the base curve data of the spherical design lens is obtained by:

Lt; / RTI &
The distance power data of the spherical design lens is obtained by dividing,

Respectively,
The distance power data of the aspherical surface design lens may include,

Lt; / RTI &
The base curve data of the multi-focal design lens may include:

Respectively,
The distance power data of the multifocal design lens may include,

Lt; / RTI &
Wherein the approximate curvature radius at the refractive power for the spherical design lens is a value rounded off at a second decimal place with respect to an arithmetic value of a base curve of the spherical point design lens, Wherein the approximate curvature radius is a value rounded off from the second decimal place with respect to a calculated value of a base curve of the multifocal design lens.

In a preferred embodiment of the present invention, a data display unit displays data of an automatic prescription screen; And an automatic prescription operating system for transmitting data such that an automatic prescription screen of the lens is displayed on the screen of the data display unit, wherein the automatic prescription screen of the data display unit includes a data input area for inputting patient data; A prescription data display unit for displaying data of a lens calculated by an automatic prescription operating system that receives a patient's data; And an aspheric surface fitting display unit displaying aspherical surface fitting data related to the aspherical surface design data, wherein the prescription data display unit includes: a spherical data display unit (41) displaying data of a spherical design lens; An aspherical surface data display section (42) for displaying data of an aspherical surface design lens; And a multifocal data display unit 43 in which data of a multifocal design lens is displayed. The spherical data display unit 41 displays the spherical design data of a flat-K and a steep- A spherical curvature radius calculation value display unit 411 for displaying curvature radius data calculated from the curvature radius calculation data; A spherical curvature radius prescription value display unit 412 displaying approximate curvature radius data rounded off at a second decimal place of the calculated radius of curvature radius data; And a spherical power calculation value display section 413 for displaying spherical power (SPH) data of the spherical design lens, refractive power data calculated from curvature radius data, and meridian meridian data, and the aspherical surface data display section 42 includes: An aspherical surface curvature radius display section 421 for displaying a value of a final curvature radius of the design lens; And an aspherical power calculation value display section (422) for displaying an aspherical power calculation value calculated from a final curvature radius (Base Curve), a spherical power, and a meridian meridian data of an aspherical design lens, wherein a final radius of curvature Base Curve value is a value of a radius of curvature corresponding to a range of a flat-K and a corneal astigmatism (CYL) of an aspheric flatting card, and the multifocus data display unit 43 A multifocal radius-of-curvature calculation value display section 431 for displaying curvature radius data calculated from the meridional meridian and the meridian meridian data of the focus design lens; A multifocal radius radius prescription value display unit 432 for displaying approximate curvature radius data rounded off at the second decimal place of the calculated radius of curvature radius data; And a multifocal refractive power calculation value display part (433) for displaying the power data calculated from the spherical power of the multifocal design lens, the degree of weakness, and the approximate curvature radius data.

으로 되고,
상기 구면디자인렌즈의 굴절력(distance power) 데이터는,

으로 되며,
상기 비구면디자인렌즈의 비구면굴절력(distance power) 데이터는,

으로 되고,
상기 다초점디자인렌즈의 곡률반경(base curve) 데이터는,

으로 되며,
상기 다초점디자인렌즈의 굴절력(distance power) 데이터는,

으로 되고,
상기 구면디자인렌즈의 굴절력(distance power)에서의 근사치 곡률반경(Base curve)은 상기 구면점디자인렌즈의 곡률반경(base curve) 데이터의 연산값에 대해 소수점둘째자리에서 반올림한 값이며, 상기 다초점디자인렌즈의 굴절력(distance power)에서의 근사치 곡률반경(Base curve)은 상기 다초점디자인렌즈의 곡률반경(base curve) 데이터의 연산값에 대해 소수점둘째자리에서 반올림한 값인 것을 특징으로 하는 렌즈자동처방시스템을 제공한다.In a preferred embodiment of the present invention, the base curve data of the spherical design lens is obtained by:

Lt; / RTI &
The distance power data of the spherical design lens is obtained by dividing,

Respectively,
The aspherical surface power data of the aspheric surface design lens is calculated by the following equation

Lt; / RTI &
The base curve data of the multi-focal design lens may include:

Respectively,
The distance power data of the multifocal design lens may include,

Lt; / RTI &
Wherein an approximate curvature radius at a distance power of the spherical design lens is a value rounded off at a second decimal place with respect to a calculated value of base curve data of the spherical point design lens, Wherein the approximate curvature radius at the distance power of the design lens is a value rounded off at the second decimal place with respect to the calculated value of the base curve data of the multifocus design lens. System.

According to a preferred embodiment of the present invention, there is provided a data input method comprising the steps of: inputting data input from a data input unit to a data storage unit through an input data processing unit; A lens data calculation step of reading data stored in a data storage unit and calculating data of the lens; And a data display step of transmitting the calculated data to a data display unit, wherein the lens data calculation step includes: a spherical design data calculation step of reading data stored in a data storage unit to calculate data of a spherical design lens; An aspheric design data operation step of reading data stored in a data storage unit and computing data of an aspherical design lens; And a multifocus design data calculation step of calculating data of the multifocal design lens by reading the data stored in the data storage unit, wherein the spherical design data calculation step comprises the steps of: A spherical design curvature computing step of reading data of a spherical design curvature, which is data of curvature radius of the spherical design lens, by reading the steep-K data; And a spherical design power calculation step of reading spherical power (SPH) data, curvature radius data, and meridian meridian data stored in a data storage unit to calculate spherical design power data, which is power data of the spherical design lens, The design data calculation step includes an aspheric design refractivity calculation step of calculating spherical power (SPH) data, final radius of curvature data, and meridian meridian data stored in the data storage unit and calculating data of aspherical design refractivity, Wherein the step of calculating the multifocal design data comprises the steps of reading the data stored in the data storage unit and storing the multifocal design curvature data, which is the radius of curvature data of the multifocal design lens, A multi-focal design curvature computing step of computing data of the multi-focal design curvature; And a multifocus design power calculation step of reading the SPF data, the curvature radius data, and the merge merge data stored in the data storage unit to calculate data of the multifocal design power, which is the power data of the multifocal design lens And an automatic prescription method of the lens.

으로 되고,
상기 구면디자인굴절력연산단계의 구면디자인굴절력(distance power)은,

으로 되며,
상기 비구면디자인굴절력연산단계의 비구면디자인굴절력(distance power)은,

으로 되고,
상기 다초점디자인곡률연산단계의 다초점디자인곡률(base curve)은,

으로 되며,
상기 다초점디자인굴절력연산단계의 다초점디자인굴절력(distance power)은,

으로 되고,
상기 구면디자인굴절력(distance power)에서의 근사치 곡률반경(Base curve)은 상기 구면점디자인곡률(base curve)의 연산값에 대해 소수점둘째자리에서 반올림한 값이며, 상기 다초점디자인굴절력(distance power)에서의 근사치 곡률반경(Base curve)은 상기 다초점디자인곡률(base curve)의 연산값에 대해 소수점둘째자리에서 반올림한 값이고, 상기 최종 곡률반경 데이터(Base Curve)는 비구면처방가이드(aspheric flatting card)의 약주경선(Flat-K) 및 각막난시(CYL)의 범위에 해당하는 곡률반경의 값인 것을 특징으로 하는 렌즈자동처방방법을 제공한다.
Further, in a preferred embodiment of the present invention, the spherical design curvature of the spherical design curvature computing step is calculated by:

Lt; / RTI &
The spherical design distance power of the spherical design power calculation step may be calculated as follows:

Respectively,
The aspheric design distance power of the aspherical surface design power calculation step may be calculated as follows:

Lt; / RTI &
The multi-focal design curvature of the multifocal design curvature calculation step may be calculated by:

Respectively,
The multifocus design distance power of the multifocus design refractivity calculation step is calculated by:

Lt; / RTI &
Wherein the approximate curvature radius at the spherical design power is a value rounded off at a second decimal place with respect to an operation value of the spherical point design curvature, Wherein the approximate curvature radius is a value rounded off to the second decimal place with respect to the calculated value of the multifocus design curvature and the final curvature radius data includes an aspheric flatting card Wherein the curvature radius is a value of a radius of curvature corresponding to a range of a flat-K and a corneal astigmatism (CYL) of the lens.

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According to the present invention configured as above, various data of lens design suitable for the eye of the patient can be automatically calculated and displayed even if only the optometrist data of the patient's eyes is inputted, There is an excellent effect being enabled.

Another effect of the present invention is to provide various data of lenses which can be designed in various types such as a spherical design lens, an aspheric design lens, a double aspherical design lens, a multifocal design lens, etc., Is automatically calculated and displayed so that an appropriate lens specification among various lenses can be easily selected.

Further, another effect of the present invention is that the prescription data according to the prescription of the practitioner is also inputted by applying to the data such as the radius of curvature and the refractive power calculated from the patient's basic optometry data, Thus, various experiences of the practitioner can be applied, thereby preventing any mistakes that may occur.

In addition, another effect of the present invention is that various data of the lens calculated by the present invention are displayed over one data display unit screen, so that each kind of lens and calculated data are viewed at a glance, It is possible to manufacture a customized lens.

1 is a system block diagram of an automatic lens prescription system according to the present invention.
FIG. 2 is a flowchart of an automatic prescription method of the automatic lens prescription system according to the present invention.
3 is a system diagram of data displayed on a data display unit by the automatic lens prescription system according to the present invention.
4 is a diagram illustrating an example in which data processed by the automatic lens prescription system according to the present invention is displayed on a data display unit.
5 is a diagram illustrating a data input area in which data processed by the automatic lens prescription system according to the present invention is displayed on a data display unit.
6 is a diagram showing an embodiment of a spherical data display unit of a prescription data display unit in which data processed by the automatic lens prescription system according to the present invention is displayed on a data display unit.
7 is a diagram illustrating an aspheric data display unit of a prescription data display unit in which data processed by the automatic lens prescription system according to the present invention is displayed on a data display unit.
8 is a diagram illustrating an embodiment of a double aspherical surface data display unit of a prescription data display unit in which data processed by the automatic lens prescription system according to the present invention is displayed on a data display unit.
FIG. 9 is a diagram showing an embodiment of a multifocal data display unit of a prescription data display unit in which data processed by the automatic lens prescription system according to the present invention is displayed on a data display unit.
10 is a diagram illustrating an aspheric surface fitting display unit in which data processed by the automatic lens prescription system according to the present invention is displayed on a data display unit.

Hereinafter, the present invention will be described in detail with reference to the accompanying drawings.

That is, as shown in FIGS. 1 to 10, the automatic lens prescription system according to the present invention includes a data input unit 12 for inputting basic data for automatic prescription of a lens, data related to lenses calculated on the basis of basic data, And an automatic prescription operating system 20 for calculating data related to lenses having various contents based on the basic data.

Therefore, those who want to obtain data related to the lens through the automatic prescription of the lens can easily obtain the lens data, so that it is easy to use and the possibility of providing the wrong specification by the user by providing the standard lens data It can be significantly lowered. The main object of the present invention is to provide a lens automatic prescription system and an automatic lens prescription method for a Rigid Gas Permeable (RGP) hard contact lens as main examples, and other soft lenses, hard lenses, hydrogel lenses, Silicone hydrogel lenses, hard contact lenses, and the like.

The automatic lens prescription system 10 according to the present invention includes a data input unit 12 and a data display unit 14 and data input from the data input unit 12 to the data storage unit 21 through an input data processing unit 22. [ And an automatic prescription operating system 20 for storing display data and transmitting the display data to the data display unit 14.

When the automatic prescription operating system 20 is implemented as an operating server connected to a wired / wireless network, the data input unit 12, the data display unit 14, and the like will be implemented as a user terminal using the present invention. Or when the automatic prescription operating system 20 is implemented as a personal computer, it will be implemented as an input device and an output device of the personal computer. In addition, when the automatic prescription operating system 20 is operated as an operating server corresponding to a smart terminal by a technology related to a smart terminal (smart phone, portable terminal, navigation, black box, etc.) The input unit 12, the data display unit 14, and the like may be implemented using an input screen, an input application, a display screen, or the like of the smart terminal.

As described above, the automatic prescription operating system 20 can be implemented as a connection configuration of a network system which is provided as an operating server and connected to a client connected to a wired / wireless network, or in the form of a self-application installed inside a personal computer or a smart terminal And the data input unit 12, the data display unit 14, and the like will be implemented in accordance with these embodiments.

A data input step S01 for storing the data input from the data input unit 12 through the input data processing unit 22 in the data storage unit 21, A lens data operation step S02 for reading the data stored in the lens and calculating data of the lens, and a data display step S03 for transmitting the calculated data to the data display part 14. [

The lens automatic prescription system 10 as well as the automatic lens prescription method and the like will be described in more detail as follows.

The automatic prescription operating system 20 is provided with a spherical design data processing unit 23 that reads data stored in the data storage unit 21 and calculates data of the spherical design lens.

The spherical design data processing unit 23 reads the data stored in the data storage unit 21 as a detailed step of the lens data calculation step S02 in the automatic lens prescription method to calculate data of the spherical design lens The spherical design data operation step S21 is performed.

In this case, the spherical lens is a spherical lens that forms a spherical surface both outside and inside of the lens. Thus, in the present invention, data of the spherical lens . The main factors of the spherical design related to the spherical lens include the Base Curve and the Distance Power.

Therefore, entering the patient's condition will automatically calculate the radius of curvature and the refractive power, which are the main components of the spherical lens. Thus, in the spherical design data processing unit 23 and the spherical design data calculation step S21, the spherical design data such as the radius of curvature and the refractive power are calculated by reading each data from the data storage unit 21 in which patient condition data is input .

The spherical design data processing unit 23 reads the flat-K and the steep-K data stored in the data storage unit 21 in detail and outputs the curvature radius data of the spherical design lens And a spherical design curvature computing unit 231 for computing a spherical design curvature. In the spherical design data calculation step S21, the spherical design curvature calculation unit 231 reads the flat-K and the steep-K data stored in the data storage unit 21, A spherical design curvature calculation step (S211) is performed to calculate spherical design curvature data which is curvature radius data of the lens.

That is, by reading the flat-K and the steep-K data stored in the data storage unit 21 by the spherical design curvature calculating unit 231 and the spherical design curvature calculating step S211, Is calculated.

As soon as the user inputs the data of the flat-K and the steep-K, the curvature data calculated by the spherical design curvature calculator 231 and calculated in the curvature radius display field of the data display unit 14 is displayed It would be preferable to be implemented.

The spherical design curvature calculator 231 and the spherical design curvature calculating step S211 may calculate the spherical design curvature based on the spherical design curvature,

≪ / RTI >

That is, the spherical design curvature is proportional to the sum of the Flat-K data and the Steep-K data, and the sum of the Flat-K data and the Steep-K data is half And a spherical lens curvature constant value (for example, 0.10).

The calculation of the spherical design curvature will now be described with reference to the embodiment of FIG. 4. The calculation is performed by reading the flat-K and the steep-K input by the user.

Kangju Kyunsoon and Kangju Kyungsoon are the data of Flat-K and the data of Kangju Kyoung-Seon (Steep-K), which were inspected through ARK (Auto Reflacto Keratometer) optometry. Therefore, it is necessary to input the flat-K data and the steep-K data of the patient, which are examined through the ARK optometry, into the left eye and the right eye, respectively.

Then, the curvature radius (Base Curve) of the spherical design lens is calculated by the spherical design curvature calculator 231, the spherical design curvature calculation step S211, and the like.

As shown in FIG. 4, when the data is inputted with 8.04 (mm) of flat-K data and 8.00 (mm) of steep-K data with respect to the right eye, the radius of curvature Is calculated as follows.

Base Curve = {{(Flat-K data (mm)) + (Steep-K data (mm))} / 2} + 0.10 (mm)

= {{8.04 (mm) + 8.00 (mm)} / 2} + 0.10 (mm)

= 8.12 (mm)

Similarly, the calculated value of the radius of curvature for the left eye is 8.09 (mm).

When the flat-K data of the eye and the steep-K of the eye are inputted, the radius of curvature of the spherical lens is automatically calculated.

Next, the spherical design data processing unit 23 is provided with a spherical design power operation unit (hereinafter referred to as a spherical design power calculation unit) for reading the spherical power (SPH) data, the curvature radius data and the meridian meridian data stored in the data storage unit 21 and calculating the power data of the spherical design lens 232 are provided.

In the spherical design data calculation step S21, spherical power (SPH) data, curvature radius data, and meridian meridian data stored in the data storage unit 21 are read by the spherical design power computing unit 232, A spherical design power calculation step S212 for calculating data of the spherical design power, which is the power of the spherical design, is performed.

The spherical power (SPH), the radius of curvature, and the meridian meridian stored in the data storage unit 21 are read by the spherical design power computing unit 232 and the spherical design power computing step S212, The refractive power is calculated.

The curvature radius data is obtained by multiplying the curvature radius data of the spherical design lens previously calculated by the spherical design curvature calculator 231 and the spherical design curvature calculation step S211 with the decimal point of the radius of curvature data calculated in the example of FIG. It is possible to perform the calculation by inputting the data as approximate radius of curvature radius data rounded off at the second digit. In other words, the approximate radius of curvature is the data rounded off at the second decimal place of the radius of curvature data calculated from the stored median meridian and median meridian data.

The spherical design power calculator 232 and the spherical design power calculator S212 calculate the spherical design power,

≪ / RTI >

That is, the spherical design refractivity is calculated by data such as spherical power (SPH), meridional meridian, and radius of curvature approximate to the calculated value.

The calculation of the refractive power of the spherical design lens will be described with reference to the embodiment of FIG. 4. The spherical power (SPH), the meridional meridian, and the radius of curvature inputted by the user are read and calculated.

The data of the spherical power (SPH), the meridian meridian, and the radius of curvature of the prescription inputted by the user are read, and for the curvature radius of the prescription, the data of the curvature radius (Base Curve) The data of the approximate radius of curvature rounded at the second digit is input as the radius of curvature data of the prescription, and the input data is read to calculate the refractive power.

As shown in FIG. 4, the spherical power (SPH) data is -3.75 (D), the flat-K data is 8.04 (mm), and the calculated base curve is 8.12 mm ), The distance power of the spherical design lens is calculated as follows, taking the approximate curvature radius data as 8.10 (mm) rounded off at the second decimal place.

Distance Power = {Spherical power (SPH) / {1 - (0.012 X Spherical power (SPH))}}

     - {(337.5 / approximate curvature radius (Base Curve) - (337.5 / Flat-K)} + 0.25

= {-3.75 / {1 - (0.012 X - 3.75)}}

     - {(337.5 / 8.10) - (337.5 / 8.04)} + 0.25

= -3.03 (D)

Similarly, the calculated value of the distance power to the left eye is -1.87 (D).

Thus, when data such as the spherical power (SPH) of the eye, the flat-K data of the eye, and the curvature radius (Base Curve) of the prescription are input, the refractive power of the spherical lens is automatically calculated.

Next, the automatic prescription operating system 20 is provided with an aspheric design data processing unit 24 for reading data stored in the data storage unit 21 to calculate data of the aspherical design lens. The lens data operation step S02 of the lens automatic prescription method by the aspherical surface design data processing unit 24 reads the aspheric design data for reading the data stored in the data storage unit 21, An operation step S22 is performed.

In the aspherical design, an aspheric lens is used to manufacture an aspheric lens. The aspheric lens is a lens having a structure that gradually becomes flat from the center to the periphery. Therefore, it can be precisely aligned on the corneal surface, so that the pressure does not deviate to any one part.

Thus, in the present invention, the data of the aspherical lens is automatically calculated by inputting the condition of the patient. The main factors of the aspheric design related to the aspherical lens include the distance power of the aspherical lens.

Therefore, when the patient's condition is input, the curvature radius and refractive power, which are the main factors of the aspherical lens, are automatically calculated. In the aspherical surface design data processing unit 24 and the aspherical surface design data calculation step S22 thereof, the aspheric surface design data of the refractive power of the aspherical lens is calculated by reading the respective data from the data storage unit 21 in which the patient condition data is input do.

The detailed configuration of the aspheric design data processing unit 24 may be such that the spherical power (SPH) data, the final radius of curvature data, and the meridian meridian data stored in the data storage unit 21 are read to calculate the refractive power data of the aspheric design lens And an aspheric design power calculation unit 241 for calculating the aspheric design power.

The aspherical surface design data processing unit 24 of the aspherical surface design data processing unit 24 reads the spherical power (SPH) data, the final radius of curvature data, and the meridian meridian data stored in the data storage unit 21, And an aspherical surface design power calculation step (S221) of calculating data of the aspherical surface design refraction power, which is the lens refraction power data.

In particular, the aspheric design power in the aspherical surface design data processing unit 24 and the aspheric design power calculation step S221,

.

The data such as the spherical power (SPH), the final radius of curvature, and the meridian meridian stored in the data storage unit 21 are read by the aspherical design data processing unit 24 and the aspheric design power calculation step S221, The refractive power is calculated.

The final curvature radius (Base Curve) input by the user is input by the user. In one embodiment, the flat curve K of the aspheric flatting card table value shown in FIG. 3, FIG. 4, The value of the radius of curvature corresponding to the range of corneal astigmatism (CYL).

The calculation of the refractive power of such an aspherical surface design lens will be described with reference to the embodiment of FIG. 4, and data such as the spherical power (SPH), the final radius of curvature, and the meridian curve input by the user are read and calculated.

As shown in FIG. 4, when the spherical power (SPH) data is -3.75 (D) and the flat-K data is 8.04 (mm) for the right eye, input through the fitting card of the aspheric prescription guide The distance power of the aspherical surface design lens is calculated as follows, assuming that the final curvature radius is 8.00 (mm) and data is input.

Distance Power = {Spherical power (SPH) / {1 - (0.012 X Spherical power (SPH))}}

     - {(337.5 / final curvature radius (Base Curve) - (337.5 / Flat-K)} + 0.25

= {-3.75 / {1 - (0.012 X - 3.75)}}

     - {(337.5 / 8.00) - (337.5 / 8.04)} + 0.25

= -3.55 (D)

Similarly, the calculated value of the distance power to the left eye is -2.18 (D).

When the data such as the spherical power (SPH) of the eye, the flat-K data of the eye, and the final curvature radius (Base Curve) are inputted, the refractive power of the aspherical lens is automatically calculated.

Next, the automatic prescription operating system 20 includes a multifocal design data processing unit 25 for reading data stored in the data storage unit 21 to calculate data of the multifocal design lens.

The lens data calculation step S02 includes a multifocus design data calculation step S23 for calculating the data of the multifocal design lens by reading the data stored in the data storage 21.

Such a multifocal design lens (multifocal lens, multifocal lens, or multifocal lens) refers to a bifocal lens in which two types of lenses are combined into one lens, or a trifocal lens with a medium distance. Recently, a progressive multifocal lens has been used.

Thus, in the present invention, the data of the multifocal lens is automatically calculated by inputting the condition of the patient. The major components of the multifocal design related to the multifocal lens include a multifocal design curvature (Base Curve), a multifocus design power (Distance Power), and the like.

Therefore, entering the patient's condition will automatically calculate the multifocal design curvature and the multifocal design refractive power, which are the main components of the multifocal lens.

The detailed configuration of the multifocal design data processor 25 may be based on reading the flat-K data and the steep-K data stored in the data storage unit 21, And a multifocal design curvature operation unit 251 for calculating the radius data.

The multifocus design data calculation step S23 reads the flat-K and the steep-K data stored in the data storage unit 21 by the multifocal design curvature calculation unit 251 A multifocus design curvature calculation step S231 for calculating data of the multifocal design curvature, which is data of the radius of curvature of the multifocal design lens, is performed.

In addition, the multifocal design curvature calculator 251 and the multifocal design curvature calculation step S231,

.

That is, the multifocal design curvature is proportional to the sum of the flat-K data and the steep-K data, and the sum of the flat-K data and the steep-K data (E.g., 0.02) of the multifocal lens curvature constant value to the value divided by half.

The calculation of the multifocal design curvature will be described with reference to the embodiment of FIG. 4. The calculation is performed by reading the flat-K and the steep-K input by the user.

Kangju Kyunsoon and Kangju Kyungsoon are the data of Flat-K and the data of Kangju Kyoung-Seon (Steep-K), which were inspected through ARK (Auto Reflacto Keratometer) optometry. Therefore, it is necessary to input the flat-K data and the steep-K data of the patient, which are examined through the ARK optometry, into the left eye and the right eye, respectively.

Then, the curvature radius (Base Curve) of the multifocal design lens is calculated by the multifocal design curvature calculator 251, the multifocal design curvature calculation step S231, and the like.

As shown in FIG. 4, when the data is inputted with 8.04 (mm) of flat-K data and 8.00 (mm) of steep-K data with respect to the right eye, the radius of curvature Is calculated as follows.

Base Curve = {{(Flat-K data (mm)) + (Steep-K data (mm))} / 2} + 0.02 (mm)

= {{8.04 (mm) + 8.00 (mm)} / 2} + 0.02 (mm)

= 8.04 (mm)

Similarly, the calculated value of the radius of curvature for the left eye is 8.01 (mm).

When the flat-K data of the eye and the steep-K of the eye are input, the radius of curvature of the multifocal lens is automatically calculated.

The multifocus design data processing unit 25 is provided with a multifocus design data processing unit 23 for reading the spherical power (SPH) data, the radius of curvature data and the meridian meridian data stored in the data storage unit 21 to calculate refractive power data of the multifocal design lens And a power calculator 252.

The multifocus design data calculation step S23 reads the spherical power (SPH) data, the radius of curvature data, and the merge merge data stored in the data storage unit 21 by the multifocus design power calculator 252 And a multifocus design power calculation step S232 for calculating data of the multifocal design power, which is the power data of the focus design lens.

In addition, the multifocal design power calculator 252 and the multifocus design power,

.

That is, the multifocus design refractivity is calculated by data such as spherical power (SPH), meridional meridian, and radius of curvature.

The calculation of the refracting power of such a multifocal design lens will be described with reference to the embodiment of FIG. 4, and data such as the spherical power (SPH), the meridian meridian, and the radius of curvature inputted by the user are read and calculated.

The data of the spherical power (SPH), the meridional meridian, and the radius of curvature of the prescription inputted by the user are read, and for the curvature radius of the prescription, the data of the curvature radius (Base Curve) The data of the approximate curvature radius rounded off at the second decimal place is input as the prescription radius of curvature data, and the input data is read to calculate the refractive power.

As shown in Fig. 4, when the spherical power (SPH) data is -3.75 (D), the flat-K data is 8.04 (mm), and the calculated base curvature is 8.04 mm ) Is 8.00 (mm) rounded off at the second decimal place, the distance power of the multifocal design lens is calculated as follows.

Distance Power = {Spherical power (SPH) / {1 - (0.012 X Spherical power (SPH))}}

     - {(337.5 / approximate curvature radius (Base Curve) - (337.5 / Flat-K)} + 0.13

= {-3.75 / {1 - (0.012 X - 3.75)}}

     - {(337.5 / 8.00) - (337.5 / 8.04)} + 0.13

= -3.67 (D)

Similarly, the calculated value of the distance power to the left eye is -2.51 (D).

When the data such as the spherical power (SPH) of the eye, the flat-K data of the eye, and the curvature radius (Base Curve) of the prescription are input, the refractive power of the multifocal lens is automatically calculated.

As described above, according to the lens automatic prescription system 10 and the automatic lens prescription method using the lens according to the present invention, by inputting data such as the spherical power of the patient, the meridian meridian, and the meridian meridian, The lens data such as the radius of curvature and the refractive power can be easily calculated with respect to the lens, the design lens, the multifocal design lens, and the like. Therefore, the practitioner or the person concerned can easily apply the automatically prescribed data and use each lens for the procedure.

An embodiment of the automatic lens prescription system and prescription method according to the present invention is shown in FIGS. 3 and 4. FIG. 4 to 10 illustrate one embodiment of data calculated by inputting actual data, and the present invention will be described in detail with reference to the drawings.

 That is, in the lens automatic prescription system 10 according to the present invention, the automatic prescription screen of FIGS. 3 and 4 is displayed on the screen of the user data display unit 14. [

According to the automatic prescription screen, the data input area 30, the prescription data display part 40, and the aspherical surface fitting display part 50 displaying the aspheric fitting card data are included.

Therefore, the patient's ARK (Auto Refractometer) (REF, Rafration, eye refraction) data is input to the corresponding column of the data input area 30, and the input data is calculated by the automatic lens prescription system 10, And is displayed on the data display section 40. Aspheric surface fitting data to be referred to when the aspherical surface design data is input is presented to the aspherical surface fitting display unit 50.

First, a data input area 30 for inputting data as shown in FIGS. 4 and 5 will be described. The data input area 30 includes a spherical power input unit 31 for inputting the SPH (spherical power) of the right eye and the left eye of the patient, a flat-K and a steep- K inputting the data of the curvature radius.

The radius of curvature input unit 32 includes a meridian meridian input unit 321 for inputting meridian meridian data and a meridian meridian input unit 322 for inputting meridian meridian data.

The flat-K input to the abdominal circumference input unit 321 represents a flat value among the two corners of the radius of curvature of the cornea. The mm value of the diopter and the mm value of the flat-K inspected through the ARK is inputted. The value converted to Diopter value is displayed by the operation.

Steep-K, inputted to the right-and-left meridian input unit 322, is a value obtained by steeping out of two meridians of the radius of curvature of the cornea. The mm value of the steep-K diopter and the mm value of the steep- , And the value converted to the Diopter value is displayed by the calculation.

The corneal astigmatism refers to the difference between the meridian meridian and the meridian meridian, and the meridian meridian, the meridian meridian, and the meridian meridian meridian are input through the meridian meridian input unit 321 and the meridian meridian input unit 322, When entered, it is automatically calculated and displayed.

CYL = (Flat-K) - (Steep-K)

The data of the corneal astigmatic axis (AX, Axis) are also calculated and displayed.

Next, the prescription data display section 40 displays the radius of curvature and the refractive power calculated for each model of each lens.

As shown in FIGS. 4, 6 to 9, etc., the material and the product name of each lens are displayed on one side, and the data of the next calculated Base Curve and the data of the distance power are displayed.

Boston XO, Boston EO, Boston EM and the like are exemplified. The name and design are HV-Elite (Sphero-Aspheric), HV-Art (True-Aspheric), HV-Classic Bi-Aspheric), GP-Multifocal (Multifocal), and the like, and the diameters of these lenses are displayed.

Boston XO, HV-Elite, spherical design, diameter 9.3mm, Violet / Green

Boston EO, HV-Art, aspheric design, diameter 9.3mm, Green / Blue

Boston EO, HV-Classic, double aspherical design, diameter 9.6mm, Gray / Brown

Boston EM, GP-Multifocal, Multifocal Design, Diameter 9.8mm, Blue / IceBlue

The prescription data display unit 40 is provided with a curvature radius display unit for displaying a curvature radius (Base Curve) for each lens, a refractive power display unit for displaying a distance power, and the like.

In the present invention including the lens automatic prescription system 10, the automatic lens prescription method, and the prescription data display unit 40 in the data display unit 14 in which data is displayed by the automatic lens prescription system 10, With reference to FIGs. 4 to 10 and the like, an actual example will be described.

First, as shown in FIGS. 4 and 5, data of a patient is inputted into each column of the data input area 30. FIG. Mainly data of the spherical diopter data and data of the radius of meridian and the radius of curvature of radius of curvature are inputted through the data input unit 12. [ Corneal astigmatism data, axis values, and diopter conversion values for mm of the radius of curvature are calculated and displayed automatically.

The input data is automatically calculated by the automatic prescription operating system 20 of the automatic lens prescription system 10 and displayed on the data display unit 14 screen. As described above, the data input unit 12, the automatic prescription operating system 20, and the data display unit 14 may be constituted by one computer, and the automatic prescription operating system 20 may include an operation server And the data input unit 12 and the data display unit 14 may be provided so as to be connected to the operating server while being performed in accordance with an embodiment of the present invention.

The input data is calculated according to a spherical design lens (spherical lens), an aspheric design lens (aspheric lens), a double aspherical design lens (double aspherical lens), a multifocal design lens (multifocal lens) Is displayed on the prescription data display unit 40 of the screen of FIG.

First, in the case of a spherical design lens, the inputted KER (Keratometry, keratometry radius) value automatically calculates a curvature radius (Base Curve) through the radius of curvature calculator, and calculates the curvature radius and the curvature radius value, Enter in the radius.

The curvature radius (Base Curve) of the spherical design lens (HV-Elite) that is automatically calculated and the calculation value in which each input value is calculated are as follows.

Base Curve = {{(Flat-K data (mm)) + (Steep-K data (mm))} / 2} + 0.10 (mm)

= {{8.04 (mm) + 8.00 (mm)} / 2} + 0.10 (mm)

= 8.12 (mm)

Therefore, as shown in Figs. 4 and 6, the spherical-surface-design-lens spherical-surface-radius calculation value display section 411 of the spherical data display section 41 in which the data of the spherical design lens is displayed is calculated as 8.12 (right- The value is displayed. As shown in FIG. 6, 8.10 (mm) is displayed in the right eye and the left eye in the radius of the approximate curvature rounded off at the second decimal place of the curvature radius value calculated by the spherical curvature radius prescription value display unit 412.

Then, when the curvature radius is determined for the spherical design lens (HV-Elite), the distance power is calculated and displayed.

The distance power of the spherical design lens and the calculation value in which the input value is calculated are as follows.

Distance Power = {Spherical power (SPH) / {1 - (0.012 X Spherical power (SPH))}}

     - {(337.5 / approximate curvature radius (Base Curve) - (337.5 / Flat-K)} + 0.25

= {-3.75 / {1 - (0.012 X - 3.75)}}

     - {(337.5 / 8.10) - (337.5 / 8.04)} + 0.25

= -3.03 (D)

Similarly, the calculated value of the distance power to the left eye is -1.87 (D).

Therefore, as shown in FIGS. 4 and 6, the spherical power calculation value display portion 413 of the spherical design lens among the spherical data display portion 41 displaying the data of the spherical design lens is set to -3.03 (right eye) and -1.87 (left eye) The value is displayed. As shown in FIG. 6, the refractive power value calculated by the spherical refractive power prescription value display unit 414 is selected and displayed as an approximate value of -3.00 in the right eye and -1.75 in the left eye.

Next, the curvature radius (Base Curve) for the aspherical surface design lens (HV-Art, HV-Classic) is determined by finding a portion where the value of the flat-K and the corneal astigmatism (CYL) .

In the presented example, the Base Curve of the Aspherical Design Lens is 8.04 for the right and left eyes, and -0.21 for the right eye and -0.53 for the right eye and the left eye, respectively. The radius of curvature in the aspherical surface fitting display portion 50 is 8.00 in both the right eye and left eye. Therefore, in the aspherical surface data display unit 42, the final curvature radius (Base Curve) value of 8.00 is selected and inputted to the aspherical surface curvature radius display unit 421 of the aspherical surface design lens.

Next, when the radius of curvature is determined for the aspherical surface design lens (HV-Art, HV-Classic), the distance power is calculated and displayed on the aspherical power calculation value display portion 422.

That is, the power of the aspheric design lens (HV-Art) for the right eye and the calculated values of the input values are as follows.

Distance Power = {Spherical power (SPH) / {1 - (0.012 X Spherical power (SPH))}}

     - {(337.5 / final curvature radius (Base Curve) - (337.5 / Flat-K)} + 0.25

= {-3.75 / {1 - (0.012 X - 3.75)}}

     - {(337.5 / 8.00) - (337.5 / 8.04)} + 0.25

= -3.55 (D)

Similarly, the calculated value of the distance power for the left eye is -2.39 (D).

Therefore, in the aspherical surface data display section 42 in which data of the aspheric surface design lens is displayed, as shown in FIGS. 4 and 7, -3.55 (right eye) and -2.39 (left eye) are given to the aspheric surface power calculation value display section 422 of the aspheric surface design lens, The value is displayed. As shown in FIG. 7, an aspheric value calculated by the aspherical refractive power prescription value display unit 423 is selected to be displayed in the right eye -3.50, the left eye -2.25, and the like.

In addition, the curvature radius and refractive power of the double aspherical design lens (HV-Classic) for the right eye and the left eye are also displayed.

Next, the curvature radius (Base Curve) of the multifocal design lens (GP-Multifocal) which is automatically calculated from the input data, and the calculation value in which each input value is calculated are as follows.

Base Curve = {{(Flat-K data (mm)) + (Steep-K data (mm))} / 2} + 0.02 (mm)

= {{8.04 (mm) + 8.00 (mm)} / 2} + 0.02 (mm)

= 8.04 (mm)

Similarly, the calculated value of the radius of curvature for the left eye is 8.01 (mm).

Therefore, as shown in FIGS. 4 and 9, 8.04 (right eye) and 8.01 (left eye) are displayed in the multifocal radius calculation value display part 431 of the multifocal design lens among the multifocus data display part 43 in which data of the multifocal design lens is displayed And a curvature radius calculation value is displayed. As shown in FIG. 9, 8.00 (mm) is displayed in the right eye and the left eye, with an approximate curvature radius rounded off at the second decimal place of the curvature radius value calculated in the multifocal curvature radius prescription value display portion 432.

When the radius of curvature is determined for the multifocal design lens (GP-Multifocal), the distance power is calculated and displayed.

In other words, the distance power of the multifocal design lens and the calculation value in which the input value is calculated are as follows.

Distance Power = {Spherical power (SPH) / {1 - (0.012 X Spherical power (SPH))}}

     - {(337.5 / approximate curvature radius (Base Curve) - (337.5 / Flat-K)} + 0.13

= {-3.75 / {1 - (0.012 X - 3.75)}}

     - {(337.5 / 8.00) - (337.5 / 8.04)} + 0.13

= -3.67 (D)

Similarly, the calculated value of the distance power to the left eye is -2.51 (D).

Therefore, as shown in FIGS. 4 and 9, -3.67 (right eye) and -2.51 (left eye) are displayed in the multifocal refractive power calculation value display part 433 of the multifocal design lens among the multifocal data display part 43, And the calculated power value is displayed. As shown in FIG. 9, an approximate value of the power calculated by the multifocus refractive power prescription value display unit 434 is selected to be displayed in the right eye -3.50, the left eye -2.50, and the like.

As described above, the user can easily calculate and use the data such as the radius of curvature and the refractive power for each lens automatically by inputting the values of the corneal radius of curvature and the radius of curvature of the patient and the value of the spherical power.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the invention is not limited to the disclosed exemplary embodiments. The technical idea of the present invention should not be construed as being limited.

10: lens automatic prescription system 12: data input unit
14: Data display section 20: Automatic prescription operating system
21: Data storage unit 22: Input data processing unit
23: spherical design data processing unit 24: aspheric design data processing unit
25: Multifocal design data processor
30: data input area 31: spherical power input unit
32: Curvature radius input section
40: Prescription data display part 41: Spherical data display part
42: Aspherical surface data display section 43: Multifocal data display section

Claims (6)

And an automatic prescription operating system that stores data input from a data input unit in a data storage unit through an input data processing unit and transmits display data to a data display unit,
The automatic prescription operating system includes:
A spherical design data processing unit for reading the data stored in the data storage unit and calculating data of the spherical design lens;
An aspheric design data processing unit for reading data stored in a data storage unit and computing data of an aspherical design lens; And
And a multifocus design data processing unit for reading the data stored in the data storage unit to calculate data of the multifocal design lens,
The spherical design data processing unit,
A spherical design curvature calculator for calculating curvature radius data of the spherical design lens by reading the flat-K and the steep-K data stored in the data storage unit; And
A spherical design power calculation unit for calculating spherical power (SPH) data, curvature radius data, and meridian meridian data stored in a data storage unit to calculate refractive power data of a spherical design lens,
The aspherical surface design data processing unit includes:
An aspherical surface design power computing unit for computing the spherical power (SPH) data, the final radius of curvature data, and the meridian meridian data stored in the data storage unit and computing the power data of the aspherical design lens,
The multi-focal design data processing unit includes:
A multifocus design curvature calculator for calculating curvature radius data of a multifocal design lens by reading data of a flat-K and a steep-K stored in a data storage unit; And
And a multifocus design power calculation unit for calculating the power data of the multifocal design lens by reading spherical power (SPH) data, curvature radius data, and meridian meridian data stored in the data storage unit,
Wherein the final radius of curvature data is a value of a radius of curvature corresponding to a range of a flat-K and a corneal astigmatism (CYL) of an aspheric flatting card.
The method according to claim 1,
The curvature radius (base curve)

Lt; / RTI &
The distance power data of the spherical design lens is obtained by dividing,

Respectively,
The distance power data of the aspherical surface design lens may include,

Lt; / RTI &
The base curve data of the multi-focal design lens may include:

Respectively,
The distance power data of the multifocal design lens may include,

Lt; / RTI &
Wherein the approximate curvature radius at the refractive power for the spherical design lens is a value rounded off at the second decimal place with respect to the calculated value of the base curve of the spherical design lens,
Wherein the approximate curvature radius at the refractive power for the multifocal design lens is a value rounded off at the second decimal place with respect to the calculated value of the base curve of the multifocal design lens.
A data display unit for displaying data of an automatic prescription screen; And
And an automatic prescription operating system for transmitting data such that an automatic prescription screen of the lens is displayed on the screen of the data display section,
In the automatic prescription screen of the data display section,
A data input area for inputting patient data;
A prescription data display unit for displaying data of a lens calculated by an automatic prescription operating system that receives a patient's data; And
An aspherical surface fitting display portion in which aspheric surface fitting data related to aspherical surface design data is displayed,
The prescription data display unit displays,
A spherical data display section (41) for displaying data of a spherical design lens;
An aspherical surface data display section (42) for displaying data of an aspherical surface design lens; And
And a multifocal data display unit (43) for displaying data of the multifocal design lens,
The spherical data display section (41)
A spherical-radius-of-curvature calculation value display section 411 for displaying the radius-of-curvature data calculated from the data on the radius of the spherical design lens (Flat-K) and the data on the steel meridian (Steep-K);
A spherical curvature radius prescription value display unit 412 displaying approximate curvature radius data rounded off at a second decimal place of the calculated radius of curvature radius data; And
A spherical power calculation value display section 413 for displaying spherical power (SPH) data of the spherical design lens, curvature radius data, and refractive power data calculated from the meridian meridian data,
The aspherical surface data display section 42 displays,
An aspherical surface curvature radius display section 421 for displaying a value of a final curvature radius of the aspherical surface design lens; And
And an aspheric surface power calculation value display unit 422 for displaying the aspherical surface power data calculated from the final curvature radius (Base Curve), spherical power, and meridian meridian data of the aspheric surface design lens,
The value of the final curvature radius of the aspherical surface design lens is a value of the radius of curvature corresponding to the range of the flat-K and the corneal astigmatism (CYL) of the aspheric flatting card,
The multi-focus data display section (43)
A multifocal radius calculation value display part 431 for displaying curvature radius data calculated from the meridional meridian and the meridian meridian data of the multifocal design lens;
A multifocal radius radius prescription value display unit 432 for displaying approximate curvature radius data rounded off at the second decimal place of the calculated radius of curvature radius data; And
And a multifocal refractive power calculation value display part (433) for displaying the refractive power data calculated from the spherical power of the multifocal design lens, the square root strength, and the approximate curvature radius data.
The method of claim 3,
The curvature radius (base curve)

Lt; / RTI &
The distance power data of the spherical design lens is obtained by dividing,

Respectively,
The aspherical surface power data of the aspheric surface design lens is calculated by the following equation

Lt; / RTI &
The base curve data of the multi-focal design lens may include:

Respectively,
The distance power data of the multifocal design lens may include,

Lt; / RTI &
Wherein the approximate curvature radius at the distance power of the spherical design lens is rounded off at the second decimal place with respect to the calculated value of the base curve data of the spherical design lens,
Wherein the approximate curvature radius at the distance power of the multifocal design lens is a value rounded off at the second decimal place with respect to the calculated value of the base curve data of the multifocal design lens Lens automatic prescription system.
A data input step of storing data input from a data input unit into a data storage unit through an input data processing unit;
A lens data calculation step of reading data stored in a data storage unit and calculating data of the lens; And
And a data display step of transmitting the calculated data to a data display unit,
Wherein the lens data calculating step comprises:
A spherical design data operation step of reading data stored in a data storage unit and computing data of a spherical design lens;
An aspheric design data operation step of reading data stored in a data storage unit and computing data of an aspherical design lens; And
A multifocus design data calculation step of reading data stored in a data storage unit and calculating data of a multifocal design lens,
The spherical design data calculation step may include:
A spherical design curvature computing step of reading data of a spherical design curvature, which is data of curvature radius of a spherical design lens, by reading data of a flat-K and a steep-K stored in a data storage unit; And
A spherical design power calculation step of reading spherical power (SPH) data, curvature radius data, and meridian meridian data stored in a data storage unit and calculating data of spherical design power, which is power of spherical design lens,
The aspherical surface design data calculation step includes:
An aspherical surface design power calculation step of reading data of spherical power (SPH) data, final radius of curvature data, and meridian meridian data stored in a data storage unit to calculate data of aspheric design power, which is power of refraction data of an aspherical design lens,
The multi-focal design data calculation step may include:
A multifocus design curvature computing step of reading data of a multifocal design curvature, which is data of curvature radius of the multifocal design lens, by reading the flat-K and the steep-K data stored in the data storage unit; And
And a multifocus design power calculation step of calculating data of multifocal design power, which is the power data of the multifocal design lens, by reading spherical power (SPH) data, curvature radius data, and meridian meridian data stored in a data storage unit,
Wherein the final curvature radius data is a value of radius of curvature corresponding to a range of flat-K and corneal astigmatism (CYL) of an aspheric flatting card.
6. The method of claim 5,
The spherical design curvature of the spherical design curvature computing step may be calculated by:

Lt; / RTI &
The spherical design distance power of the spherical design power calculation step may be calculated as follows:

Respectively,
The aspheric design distance power of the aspherical surface design power calculation step may be calculated as follows:

Lt; / RTI &
The multi-focal design curvature of the multifocal design curvature calculation step may be calculated by:

Respectively,
The multifocus design distance power of the multifocus design refractivity calculation step is calculated by:

Lt; / RTI &
Wherein the approximate curvature radius at the spherical design power is a value rounded off at the second decimal place with respect to the calculated value of the spherical design curvature,
Wherein the approximate curvature radius at the multifocus design power is a value rounded off to the second decimal place with respect to the calculated value of the multifocus design curvature.

Images