Hereditary optic neuropathies: From the mitochondria to the optic nerve

PURPOSE: To review our current knowledge of inherited optic neuropathies. DESIGN: Perspective. METHODS: Literature review. RESULTS: The hereditary optic neuropathies consist of a group of disorders in which optic nerve dysfunction figures solely or prominently and direct inheritance is clinically or genetically proven. The most common of these disorders are autosomal dominant optic atrophy (Kjers ' disease) and maternally, inherited Leber ' s hered, itary optic neuropathy. Other inherited neurologic and systemic syndromic diseases will frequently manifest optic neuropathy. A selective vulnerability of the optic nerve to perturbations in mitochondrial function may underlie a final common pathway among these disorders. CONCLUSIONS: The ophthalmologist should be familiar with the clinical characteristics and diagnosis of the hereditary optic neuropathies. Recent advances in our under, standing of the underlying pathophysiology of the inherited optic neuropathies may provide insight into their treatment and the treatment of acquired optic nerve disorders. (Am J Ophthalmol 2005;140:517-523. (c) 2005 by Elsevier Inc. All rights reserved).