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
Methyl alcohol causes blindness by acting on? 
Select and explain. 
A. Ganglion cells, B. Nerve fibers, C. Rods & Cones, D. Rods only
A: Ganglion cells
Answer: A: Ganglion cells 
Explanation: Ganglion cells REF: khurana 4th ed p. 296 "Methyl alcohol is oxidized into formic acid and formaldehyde and it causes degeneration of ganglion cells of retina resulting in optic atrophy"