Bietti’s Crystalling Dystrophy (BCD) is an inherited eye disease. The symptoms of BCD include: crystals in the cornea; yellow, shiny deposits on the retina; and progressive atrophy of the retina, choriocapillaries and choroid. This tends to lead to progressive night blindness and visual field constriction. BCD is a rare disease and appears to be more common in people with Asian ancestry.
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