Inherited night blindness is a group of genetically and clinically heterogeneous retinal disorders characterized by myopia, hyperopia, strabismus, nystagmus, reduced visual acuity and dry eyes. It is inherited as autosomal dominant, autosomal recessive and X-linked forms. Different genes are involved in night blindness that play an important function in physiology and morphology of human retina. Very few studies have been carried out on autosomal recessive congenital stationary night blindness specially in Pakistan. This project is also one of very few studies carried out in Pakistan.