Genetic ocular diseases are heterogeneous disorders. Recent advances have led to a paradigm shift in the discovery of eye disease-associated genetic variants from linkage and genome-wide association studies to next-generation sequencing-based genome studies. The aim of the current study was to investigate the spectrum of possible vision impairment-related variants in 66 Iranian patients. Whole-exome sequencing (WES) technology followed by bioinformatics analysis, Sanger validation, and co-segregation study were done to find eye disease-causing variants in the patients with vision impairments from Southwest Iran. WES revealed disease-causing variants in 82% of the enrolled cases. WES of understudied cohorts presented an effective strategy for determining pathogenic variants in heterogeneous eye diseases and demonstrated the distribution of causative genetic mutations in Iranian patients. The present data could provide the potential to accelerate genetic screening and a reference for treatment modalities for patients with different types of eye disorders from Southwest Iran.
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