Phenotype details |
Diagnosis of CRD was based in initial complaints of blurred central vision without a history of night blindness, poor visual acuity, impairment of colour vision, funduscopic evidence of atrophic macular degeneration, peripheral disturbances including pigment clumping and/or pigment epithelial thinning, and greater or earlier loss of cone than rod ERG amplitude. At the age of 59 the visual acuity was 0.05 OD an d 0.05OS. |