[Leber's optic neuropathy. Future prospects]

Leber's optic neuropathy is a maternally inherited disease. Its transmission does not correspond to Mendelian principles and two hypothesis about the role of cytoplasmic transmission are discussed. The role of a virus or a mutation mitochondrial DNA, maternally transmitted, are possible. However if not definite conclusion can be, actually, certified, there is a good hope to find a solution for this disease, in a near future.