Retina Examination and Drawing
Retina Examination and Drawing
Retina Examination and Drawing
Examination
and
Drawing
Ora Serrata
The border between the retina and the
non-pigmented epithelium of the pars plana.
Does not run in a straight line.
Composed of forward pointed extensions of
retina dentate processes
Between dentae processes oral-bays
Anatomical Landmarks
Optic disc
Macula Fovea
Vortex veins
Medial and lateral long posterior
ciliary nerves and arteries
OD
Topographical Measurements
to be Remembered
Location of the ora 7.5 to 8 mm
from the
limbus.
Equator 13.7 mm from the limbus
I mm less nasally
1 mm more temporally
Methods of fundus
examination
Indirect Ophthalmoscopy
Slit lamp Biomicroscopy
The
equator
The ora
Junction
of P. Plana
&
P. Plicata
Colour Coding
Features are basic to drawing of
retina.
Horse shoe
tear
Detached
retina
Lattice with
holes
Attached
retina
Buckle
Encircling band
Sclerotomy (drainage)
site
suture
Intrascleral buckles
Sleeve
Encircling band
Implant
Partial thickness
sclerectomy
Encircling band
Sleeve
Encircling band
Partial thickness
scleral tunnel