A chronic tobacco chewer came to OPD with diminution of vision. Which of the following nutritional supplement can be provided to him:: (A) Vitamin B1, (B) Vitamin B2, (C) Vitamin B6, (D) Vitamin B12
Answer is D. Vitamin B12 is used for tobacco associated amblyopia. Tobacco associated amblyopia Seen in men doing heavy smoking, drinking and diet deficient in protein and vitamin B complex. Toxic agent involved is cyanide. B/L centrocecal scotomas are seen. Vitamin B12, 1000 microgram i.m injection weekly.