Vitamin B12 deficiency is likely to cause -: (A) Bitemporal heminanopia, (B) Binasal hemianopia, (C) Heteronymous hemianopia, (D) Centrocecal scotoma
Answer is D. Vitamin B12 (also known as cobalamin) is an essential vitamin for neurological function. Vitamin B12 deficiency optic neuropathy is a rare complication of this deficiency that results in progressive, bilateral, painless vision loss that is often associated with reduced color vision and central or cecocentral scotomas. Ref AK khurana 6/e