Optic Atrophy 2, also known as opa2, is related to optic atrophy 1 and 3-methylglutaconic aciduria, type iii. An important gene associated with Optic Atrophy 2 is OPA2 (Optic Atrophy 2 (Obscure)). Affiliated tissues include eye, and related phenotypes are optic atrophy and progressive visual loss