Retina and Vitreous Disorders Flashcards
7 cards from real Board Certified Ophthalmologist practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.
Read the first 7 Retina and Vitreous Disorders flashcards as text
Which DRCR Retina Network trial found aflibercept superior to bevacizumab at 1 year for center-involved DME with baseline visual acuity of 20/50 or worse?
Answer: Protocol T
Protocol T compared aflibercept, bevacizumab and ranibizumab for DME, and aflibercept gave the biggest 1-year gain when baseline vision was 20/50 or worse.
DRCR Protocol S compared which two treatments for proliferative diabetic retinopathy?
Answer: Ranibizumab versus panretinal photocoagulation
Protocol S showed ranibizumab was noninferior to PRP for visual acuity at 2 years, with less visual field loss.
In the Central Vein Occlusion Study, a CRVO was classified as ischemic when fluorescein angiography showed at least how much capillary nonperfusion?
Answer: 10 disc areas
CVOS defined ischemic CRVO as 10 or more disc areas of retinal capillary nonperfusion.
In the Branch Vein Occlusion Study, which patients were recommended grid laser for macular edema?
Answer: Eyes with edema lasting at least 3 months and VA of 20/40 or worse
BVOS showed that grid laser improved vision in eyes with macular edema lasting 3 months or more and VA of 20/40 or worse.
What is the most common cause of acute retinal necrosis in an immunocompetent patient over 50?
Answer: Varicella-zoster virus
VZV is the leading cause of ARN overall and especially in older patients; HSV-2 is more common in younger patients.
Under the International Vitreomacular Traction Study classification, a small full-thickness macular hole has a minimum linear width of:
Answer: ≤250 µm
The IVTS defines small FTMH as ≤250 µm, medium as >250 to ≤400 µm, and large as >400 µm.
A patient with a vitelliform 'egg-yolk' macular lesion has a normal full-field ERG. Which test result is characteristic?
Answer: Arden ratio below 1.5 on EOG
Best disease (BEST1) has a markedly abnormal EOG light-peak/dark-trough ratio with a normal ERG.