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
All of the following can cause a white pupillary reflex except: 
Select and explain. 
A. Retinoblastoma, B. Cataract, C. Retrolental fibroplasias, D. Glaucoma
D: Glaucoma
Answer: D: Glaucoma 
Explanation: D i.e. Glaucoma