This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Plain Film Radiography, Fluoroscopy, and Tomosynthesis, Subject name: Radiology
Fluorescin angiography is used to examine - 
Select and explain. 
A. Ciliary vasculature, B. Retinal vasculature, C. Comeal vasculature, D. Conjuctival vasculature
B: Retinal vasculature
Answer: B: Retinal vasculature 
Explanation: Ans. is 'b' i.e., Retinal vasculatureo Fluorescein angiography is a radiological examination of retinal vasculature after the administration of a fluorescein dye.