[Vitamin B 12 deficiency as the cause of optic atrophy].
D000752:Anemia, Pernicious / Q000150:complications*; D006801:Humans; D008297:Male; D008875:Middle Aged; D009896:Optic Atrophy / Q000209:etiology*; D014806:Vitamin B 12 Deficiency / Q000150:complications*
Niedobór witaminy B12 jako przyczyna zaniku nerwu wzrokowego.