glossary

A group of genetic eye conditions leading to chronic retinal degeneration, accompanied by abnormal deposits of pigment. The disease causes a progressive decrease in peripheral or side vision. Associated with night blindness, loss of peripheral vision, tunnel vision, decreased acuity, lack of depth perception, retinal scarring, and photophobia.

A small channel near the root of the iris which extends round the circumference of the eye. The trabecular meshwork filters aqueous into it, and from it the aqueous drains into veins which leave the eye.

The ?white? of the eye. It forms the wall of the eye, except in the region of the cornea.