Bietti Crystalline Corneoretinal Dystrophy
Type of disease: Rare conditions
Bietti crystalline corneoretinal dystrophy is an inherited eye disease. Symptoms include crystals in the cornea (the clear covering of the eye); yellow, shiny deposits on the retina; and progressive atrophy of the retina, choriocapillaries and choroid (the back layers of the eye). This tends to lead to progressive night blindness and loss of visual acuity. Bietti crystalline corneoretinal dystrophy is caused by mutations in the CYP4V2 gene and inherited in an autosomal recessive fashion. Source: Genetic and Rare Diseases Information Center (GARD), supported by ORDR-NCATS and NHGRI.