Abstract
Background: A Chinese family with X-linked juvenile retinoschisis (XLRS) was identified. The purpose of this study was to identify genetic defects in this family and to investigate the visual function during the progression of the disease in the proband from childhood to adulthood.Methods: The family history was collected and the proband underwent regular ophthalmologic examinations. Venous blood was collected from family members and genomic DNA was extracted. All exons and exon-intron boundaries of the RS1gene were sequenced for gene mutation in this family.Results: The pedigree of interest was a three-generation family with 43 family members, including three affected individuals. The proband clinically diagnosed with XLRS was investigated at 7 years of age with a follow-up of 32 years. Best corrected visual acuity was stable and complications such as vitreous hemorrhage, retinal detachment, and subcapsular cataract arose during this follow-up period. The R213Q mutation in exon6 of RS1 was identified in all affected individuals.Conclusions: Clinical follow-up of an XLRS patient with a typical juvenile retinoschisis phenotype revealed no significant decline in visual acuity during this time period. Various complications such as vitreous hemorrhage and cataract may occur during the progression of the disease which may lead to severe vision loss.
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