Usher Syndrome: A Rare Case
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© UPJO, 2023 Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons licence, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons licence, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons licence and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this licence, visit https://creativecommons.org/licenses/by-nc-sa/4.0/.
Usher syndrome is a rare heterogenous autosomal recessive genetic disorder with features of visual impairment due to retinitis pigmentosa and hearing loss. Other names for it include Hallgren syndrome, Usher-Hallgren syndrome, retinitis pigmentosa-dysacusis syndrome, and dystrophia retinae dysacusis syndrome.1,2 Usher syndrome represents a genetically diverse condition that involves both early onset sensorineural hearing loss and retinal pathology. While reports of disease prevalence vary, the condition has been estimated to occur in three in 100, 000 individuals.Abstract
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