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
In the Endophthalmitis Vitrectomy Study, immediate vitrectomy gave better outcomes than tap-and-inject in which patients?
Answer: Patients with presenting vision of light perception only
EVS showed immediate vitrectomy helped only eyes with light-perception presenting vision after cataract surgery.
Several months after cataract surgery, a patient has low-grade granulomatous inflammation and a white plaque on the posterior capsule. What is the most likely organism?
Answer: Cutibacterium acnes
C. acnes (formerly Propionibacterium) causes chronic, delayed-onset postoperative endophthalmitis with a capsular plaque.
In the Retina Society classification, proliferative vitreoretinopathy with full-thickness fixed retinal folds is graded:
Answer: Grade C
Grade C PVR means full-thickness fixed retinal folds; grade A is vitreous haze and pigment clumps, and grade B is inner-surface wrinkling with rolled tear edges.
Which retinal detachment is the best candidate for pneumatic retinopexy?
Answer: A single break within 1 clock hour in the superior two-thirds of the fundus
Pneumatic retinopexy works best for superior breaks within 1 clock hour that the gas bubble can tamponade, and PIVOT showed good visual outcomes.
What is the approximate nonexpansile concentration of perfluoropropane (C3F8) gas mixed with air?
Answer: 14%
C3F8 is nonexpansile at about 12 to 14%, while SF6 is nonexpansile at about 18 to 20%.
When silicone oil is placed in an aphakic eye, which procedure prevents pupillary block?
Answer: Inferior (Ando) peripheral iridectomy
Silicone oil is lighter than aqueous and floats upward, so an inferior iridectomy at 6 o'clock lets aqueous flow forward.
After blunt trauma, a patient has transient gray-white retinal whitening in the posterior pole that fades over days. What is the main pathology?
Answer: Disruption of photoreceptor outer segments
Commotio retinae (Berlin edema) comes from fragmented photoreceptor outer segments and RPE injury, not true extracellular edema.