This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Retina, Subject name: Ophthalmology
Tubular vision is seen in 
Select and explain. 
A. Retinitis pigmentosa, B. Bread crumb cataract, C. Balint syndrome, D. central serous retinopathy
A: Retinitis pigmentosa
Answer: A: Retinitis pigmentosa 
Explanation: Ans. (a) Retinitis pigmentosa