The most common forms of inherited optic neuropathies, described so far, are the Leber's optic neuropathy (LHON), and the dominant optic atrophy (DOA) caused by mutations in the nuclear gene OPA1 (Carelli et al, 2017; Chun & Rizzo, 2017). Here, OPA1 is linked to autosomal dominant optic atrophy.