What is Pigmentary Retinitis?
Pigmentary Retinitis (PR) consists of a group of genetic disorders that affect the ability of the retina to process light. It is an inherited disease that causes gradual loss of vision, beginning with decreased night vision (nictalopia) and loss of peripheral vision. There is currently no cure for PR.

The retina is a neurosensory structure that encompasses a layer of light-sensitive cells (photoreceptors) that convert light rays into electrical impulses. These impulses are sent to the brain through the optic nerve, where they are recognized as images.

In PR, the photoreceptors, called cones and rods, die. In most forms of RP, rods (responsible for peripheral and nocturnal vision) are the first to degenerate. When the most central retinal cells (cones) are affected by PR, they cause a loss of vision.