This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Angiography, Subject name: Radiology
Fluorescin angiography is used to examine- 
Select and explain. 
A. Ciliary vasculature, B. Retinal vasculature, C. Corneal vasculature, D. Conjuctival vasculature
B: Retinal vasculature
Answer: B: Retinal vasculature 
Explanation: Fluorescin angiography used to examine: Retinal vasculature in DM retinopathy patients for neovascularization. Normal retinal vasculature on flouroscein angiography.