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
Defect in amblyopia lies in: 
Select and explain. 
A. Lateral geniculate body, B. Afferent pupillary reflex, C. Rods and cones, D. Retina
A: Lateral geniculate body
Answer: A: Lateral geniculate body 
Explanation: Ans. Lateral geniculate body