This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Squint, Subject name: Ophthalmology
Altitudnal Field Defects are seen in 
Select and explain. 
A. Non Aeritic Ischemic Optic Neuropathy, B. Lateral Geniculate Body lesions, C. Optic nerve lesion, D. Optic Chiasma Lesion
A: Non Aeritic Ischemic Optic Neuropathy
Answer: A: Non Aeritic Ischemic Optic Neuropathy 
Explanation: Non aeritic AION Impoant Points on Visual Pathway Lesions 1. Optic nerve lesion I/l direct and c/ L consensual reflex gone Causes *Optic atrophy/ optic neuritis, Avulsion optic nerve 2. Middle Chiasmal syndrome/ Central Chiasmal lesion Saggital chiasma lesion Bitemporal hemianopia