This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Conjunctiva, Subject name: Ophthalmology
All of the following are causes of night blindness except 
Select and explain. 
A. Oguchi, B. Vitamin A deficiency, C. High myopia, D. Devics disease
D: Devics disease
Answer: D: Devics disease 
Explanation: Devics disease is optic neuritis with myelitis It is also called neuromyelitis optica Refer Khurana 6th edition page number 329