Abstract

To further explore the influence of genotype, including mutation type and structural domain, on the severity of macular atrophy, we measured the central retinal thickness (CRT) in patients with ABCA4-related retinopathy. A total of 66 patients were included in the cohort. This was a retrospective investigation. The patients were tested using whole exon sequencing and ophthalmic exams, including slip lamp exams, best-corrected visual acuity, optical coherence tomography, fundus photo, and fundus autofluorescence. In this study, we discovered that mutations on nucleotide binding domains (NBD) lead to less CRT (45.00 ± 25.25μm, 95% CI: 31.54-58.46) had significantly less CRT than the others (89.75 ± 71.17μm, 95% CI: 30.25-149.25, p = 0.032), and could accelerate the rate of CRT decrease. Our study provides new perspectives in the understanding of ABCA4-related retinopathy.

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