Source:allaboutvision
Retinitis pigmentosa (RP) is a rare, inherited disease in which the light-sensitive retina of the eye slowly and progressively degenerates. Eventually, blindness results.
When retinitis pigmentosa is suspected, visual field testing likely will be conducted during or after your routine eye exams to determine the extent of peripheral vision loss. Other specialized eye tests may be needed to determine whether you have lost night or color vision.