Fundus fluorescein angiography in a patient with ischemic central retinal vein occlusion is most likely to show which of the following findings?
- A Blocked fluorescence from hemorrhage
- B Hyperfluorescence of the optic disc in the late phase
- C Greater than 10 disc areas of capillary non-perfusion ✓
- D Arteriovenous transit time less than 5 seconds
Correct answer: C. Greater than 10 disc areas of capillary non-perfusion
Explanation
Ischemic CRVO is defined by the presence of significant capillary non-perfusion, typically greater than 10 disc areas on FFA. This extensive ischemia drives vascular endothelial growth factor production, leading to neovascularization. Disc hyperfluorescence can occur in both ischemic and non-ischemic CRVO, but the area of non-perfusion differentiates severity.
Reference: Ryan's Retina, 6th ed.
High-yield for: NEET PGINI-CETNExTFMGEUSMLEPLABMRCP
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