This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Ophthalmology
The retina receives its blood supply from all, except: 
Select and explain. 
A. Posterior ciliary aery, B. Central retinal aery, C. Retinal aeries, D. Plexus of Zinn and Haller aeries
D: Plexus of Zinn and Haller aeries
Answer: D: Plexus of Zinn and Haller aeries 
Explanation: D i.e. Plexus of Zinn and Haller aeries The retina has dual blood supply, the choroidal circulation & central retinal aerial circulation. Uveal tract (choroids) is supplied by posterior ciliary aeries (long & sho) and anterior ciliary aeriesQ. Posterior ciliary aeries do not supply retina directly, (but indirectly). Plexus of Zinn supply the optic disc (lamina cribrosa)(2)