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What is Mizuo phenomenon is seen in and explain in detail?
Oguchi disease also called as congenital stationary night blindness * Mizuo- nakamura phenomenon: Patient sees better in dark than during day. * Genetic: AR, Mutation in rhodopsin kinase gene * Fundus is normal in dark but loses its sheen in day light * Delayed dark adaptation time * Cause: impaired rods activity (overstimulation of rod cells)