La retina

Question 1

Vitreous anatomy

Answer 1

Ligament of Weiger: collagenous fibers that attach to the posterior lens capsule

Berger space: potential space between posterior peripheral lens and anterior cortical gel

Patellar fossa: retrolental indentation of anterior vitreous

Question 2

Rods have greatest density …

Answer 2

4 mm from fovea center / 12 degrees from fixation

Question 3

ILM
MLM
ELM

are made of …

Answer 3

ILM - foot plates of Muller cells contained in Inner Nuclear Layer

MLM - inner 1/3 of OPL where synaptic and desmosomal connections occur between photoreceptor inner fibers and processes of bipolar cells

ELM - zonular attachments between photoreceptors and Muller cells

Question 4

Vascular supply of retina

Answer 4

Central retinal artery (from ophthalmic artery) - divides into four branches

• radial peripapillary network
• superficial vascular plexus
• deep capillary plexus

Choroidal circulation via posterior ciliary arteries - Haller and Sattler layers then choriocapillaris then venules to vortex veins

Question 5

Bruchs membrane

Answer 5

Basement membrane of the RPE
Inner collagenous zone
Middle elastic layer 
Outer collagenous zone
Basement membrane of the endothelium of the choriocapillaris

Question 6

Mutation in EFEMP1 gene causes

Answer 6

Doyne honeycomb dystrophy aka Malattia Leventinese aka radial Drusen

Mutation in complement factor H

Question 7

Quadrants most common for retinal dialysis

Answer 7

Inferotemporal / superonasal

Question 8

Fluorescein Angiography

Answer 8

Blue enters 465 no

Photos emitted at 520 to 530

Yellow green filter

Question 9

Degenerations that can lead to retinal detachment

Answer 9

Cystic tufts
Zonular traction retinal tufts
Lattice 
Meridonal folds
Enclosed Ora bays
Peripheral retinal excavation