Optical coherence tomography angiography (OCTA) is preferred over conventional FFA for imaging which of the following conditions?

• A Active uveitis with vasculitis to assess vascular leakage
• B Focal areas of RPE window defects in Best disease
• C Assessment of disc leakage in anterior ischaemic optic neuropathy
• D Superficial capillary plexus flow deficits in diabetic macular ischemia ✓

Explanation

OCTA provides depth-resolved, dye-free imaging of the retinal microvasculature and can precisely delineate superficial capillary plexus (SCP) and deep capillary plexus (DCP) flow deficits in diabetic macular ischemia — something conventional FFA cannot separate. OCTA does not image leakage because it maps flow rather than dye diffusion; hence active vasculitis, RPE window defects, and disc leakage requiring late-phase FFA images are better evaluated with conventional FFA or ICGA.

Reference: Khurana Comprehensive Ophthalmology, 7th ed.

High-yield for: NEET PGINI-CETNExTFMGEUSMLEPLABMRCP

Written and medically reviewed by the StethoPrep medical team.