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 are causes of night blindness EXCEPT: 
Select and explain. 
A. Oguchi's disease, B. Vitamin A deficiency, C. High myopia, D. Devics disease
D: Devics disease
Answer: D: Devics disease 
Explanation: Causes of night blindness or nyctalopia: Vitamin A deficiency Tapetoretinal degenerations like retinitis pigmentosa Congenital high myopia Familial congenital night blindness Oguchi's disease Lenticular or corneal opacities Advanced primary open angle glaucoma