Leber’s hereditary optic neuropathy (LHON) is a mitochondrially inherited genetic disorder.
Its a rare disease that affects mostly young adult men but can happen at any age and sex who have the gene mutation. Not everyone with the mutation will have symptoms
Medical Video
Links
http://www.lhon.org <--- best site
http://en.wikipedia.org/wiki/Leber's_hereditary_optic_neuropathy
