Nyctalopia is an eye condition characterised by defects in the regeneration of rhodopsin. It is caused by vitamin A deficiency.
Rhodopsin is a protein found in the photoreceptor rods in the eye’s retina. It is sensitive to light and plays an important role in enabling the photoreceptor rods to sense light, which is essential for good vision. High dose vitamin A therapy can restore rhodopsin regeneration, reversing the effects of nyctalopia.
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