This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: All India exam, Subject name: Physiology
ICG angiography is primarily indicated in 
Select and explain. 
A. Minimal classical CNV, B. Occult CNV, C. Angioid streaks with CNV, D. Polypoidal choroidal vasculopathy
B: Occult CNV
Answer: B: Occult CNV 
Explanation: We recommend ICG with some enthusiasm for identifying feeder vessels in age-related macular degeneration, choroidal neovascular membranes, chronic central serous retinopathy, multiple evanescent white dot syndrome, vasculitis, acute multifocal placoid pigment epitheliopathy, Vogt-Koyanagi-Harada syndrome Ref ganong's review of medical physiology 25e 643