eye disorders
Retinitis Pigmentosa
Symptoms and Signs of Retinitis Pigmentosa
Retinal rods are affected, causing defective night vision that becomes symptomatic at varying ages, sometimes in early childhood. Night vision may eventually be lost. A peripheral ring scotoma (detectable by visual field testing) widens gradually, and central vision may also be affected in advanced cases. Vision decreases as the macula becomes increasingly involved and can evolve to legal blindness. Hyperpigmentationin a bone-spicule configuration in the midperipheral retina is the most conspicuous funduscopic finding. Other findings include the following: Narrowing of the retinal arterioles Cystoid macular edema Waxy yellow appearance of the disk Posterior subcapsular cataracts Cells in the vitreous (less common) Myopia 