Hereditary optic atrophy (Leber's disease).
D000293:Adolescent; D003486:Cyanides / Q000378:metabolism; D006801:Humans; D008297:Male; D008661:Metabolism, Inborn Errors / Q000150:complications; D009896:Optic Atrophy / Q000209:etiology / Q000235:genetics*; D012907:Smoking / Q000150:complications
D003486:Cyanides