Non-Rhegmatogenous RD

Question 1

Cause of tractional RD

Answer 1

Fibrovasculat membrane (cyclitic membrane) pulling the sensory retina away from RPE

Question 2

Other causes of TRD

Answer 2

Proliferative diabetic retinopathy(most common cause)
Cyclitic membrane (post uveitis)
Vitreous hge
Retinopathy of Prematuritry
Proliferative sickle cell Retinopathy
Penetrating posterior segment trauma
Vitreous fibrosis

Question 3

The main difference between Rhegmatogenous and tractional RD

Answer 3

In TRD
No tears
There is fibrosis

If both exist : it is called combined RD

Question 4

Causes of Exudative RD

Answer 4

Choroidal tumors such as melanoma, hemangioma, and metastasis
Choroiditis (posterior scleritis, Harada syndrome)
Subretinal (choroidal ) Neovascularization
Systemic causes; severe HTN, eclampsia

Question 5

Differences of Serous RD compared to the previous types

Answer 5

More convex, smooth elevation
No tear
Shifting fluid (very mobile): Visual defects change with gravity
Usually, there is no photopsia: no vitreal traction or mechanical irritation
No fibrovascular memebrane or fibrosis (like in TRD)

Question 6

The most common 1ry ocular tumor in old age is one of the causes of Exudative RD

Answer 6

Choroidal melanoma

Question 7

Summary of fundus findings and the dx of types

Answer 7

Tear?&raquo_space; Rhegmatogenous
Smooth greyish surface&raquo_space; serous
Fibrovascular fibrosis or membrane&raquo_space; Tractional