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Ophthalmological findings in children and young adults with genetically verified mitochondrial disease

Journal article
Authors Marita Andersson Grönlund
Antovan Seyedi Honarvar
Susann Andersson
Ali-Reza Moslemi
Anders Oldfors
Elisabeth Holme
Mar Tulinius
Niklas Darin
Published in British Journal of Ophthalmology
Volume 94
Issue 1
Pages 121-127
ISSN 1468-2079
Publication year 2010
Published at Institute of Neuroscience and Physiology
Institute of Neuroscience and Physiology, Department of Clinical Neuroscience and Rehabilitation
Institute of Biomedicine, Department of Clinical Chemistry and Transfusion Medicine
Institute of Biomedicine, Department of Pathology
Institute of Clinical Sciences, Department of Pediatrics
Pages 121-127
Language en
Links dx.doi.org/10.1136/bjo.2008.154187
Subject categories Children, Ophthalmology, Immunogenetics

Abstract

Aim: To describe ophthalmological phenotypes in patients with mitochondrial disease and known genotypes. Methods: A retrospective study was performed on 59 patients (29 male, 30 female) with a mean age of 11.8 years who had mitochondrial disease with known DNA mutations. Fifty-seven of the 59 subjects underwent a detailed ophthalmological examination including visual acuity (VA), eye motility, refraction, slit-lamp examination, ophthalmoscopy and, in almost one-half of the cases, a full-field electroretinogram (ERG). Results: Forty-six (81%) of the patients had one or more ophthalmological findings such as ptosis (n = 16), reduced eye motility (n = 22) including severe external ophthalmoplegia (n = 9), strabismus (n = 4), nystagmus (n = 9), low VA (n = 21), refractive errors (n = 26), photophobia (n = 4), and partial or total optic atrophy (n = 25). Pigmentation in the macula and/or periphery was noted in 16 patients. In 10/27 investigated individuals with full field ERG, retinal dystrophy was recorded in six different genotypes representing Kearns–Sayre syndrome (n = 5), Leigh syndrome (n = 1), Mitochondrial encephalopathy, lactic acidosis, and stroke-like episodes (MELAS) (n = 1), Myoclonus epilepsy with red ragged fibres (MERRF) (n = 1), Leber hereditary optic neuropathy (n = 1) and mitochondrial myopathy (n = 1). Conclusion: The results show that a majority of patients with mitochondrial disorders have ophthalmological abnormalities. We recommend that an ophthalmological examination, including ERG, be performed on all children and adolescents who are suspected of having a mitochondrial disease.

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