Leber's hereditary optic neuropathy--case report and literature review.

Context: Leber's hereditary optic neuropathy is an important cause of progressive painless visual loss among young male patients.

Objective: To report on a case of a young patient with a clinical and neurophysiological condition suggestive of Leber's hereditary optic neuropathy, confirmed by genetic testing.

Case Report: We describe a 17-year-old male with progressive bilateral visual loss.