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This article is intended for ophthalmolo-gists, geneticists and genetic counselors new to molecular genetic testing for ocular dis-eases. Successful identification of causative mutation(s) in eye genes could augment tra-ditional diagnostic strategies, ensure better medical management and increase accuracy of genetic counseling. Some future potential treatment therapies will rely on knowing the causative gene. Patients can access molecular testing through clinical genetic services available for many genetic disorders, including genetic eye diseases (GEDs). The number of commercial compa-nies offering DNA testing and whole genom