the difference between the vision of a normal eye and an eye affected by best disease,

best disease vitelliform macular retina dystrophy eye fundus disk bestrophinopathy fovea fundoscopy illustration investigation macula medical bestrophin ocular ophthalmologist ophthalmology ophthalmoscopy optic cup retinal retinoscopy vessel vision genetic disorder stage 1 gene bvmd hereditary pigment epithelium lesion pseudohypopyon lipofuscin vitelleruptive atrophic atrophy fundoscopic blur blurred distortion black spot desatured colors