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Observation
November 2016

Peripapillary Capillary Dilation in Leber Hereditary Optic Neuropathy Revealed by Optical Coherence Tomographic Angiography

Author Affiliations
  • 1Department of Ophthalmology, Massachusetts Eye and Ear Infirmary, Harvard Medical School, Boston
JAMA Ophthalmol. 2016;134(11):1332-1334. doi:10.1001/jamaophthalmol.2016.3593

Leber hereditary optic neuropathy (LHON) is caused by mitochondrial mutations that lead to sequential, subacute vision loss with incomplete penetrance and variable expressivity.1 The most common mutations involve complex I subunits of the electron transport chain causing an energy production-demand mismatch that preferentially affects retina ganglion cells. The fundus can show only subtle vascular changes or appear normal, posing a diagnostic challenge in the acute phase of the disease.

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