<unk>  is an eye disease characterized by the abnormal splitting of the retina's neurosensory layers, usually in the outer plexiform layer.<unk>  can be divided into degenerative forms which are very common and almost exclusively involve the peripheral retina and hereditary forms which are rare and involve the central retina as sometimes the peripheral retina. The degenerative forms are asymptomatic and involve the peripheral retina only and do not affect the visual acuity. Some rarer forms result in a loss of vision in the corresponding visual field. Almost all cases are X-linked recessive and caused by a mutation in the<unk>  gene <unk> 1).
Retinoschisis
Tangier disease
Ocular albinism
Bayoud disease
Oculocutaneous albinism
Chondrodysplasia punctata
Ocular albinism type 1
Ophthalmia nodosa