glossary

Reflex that enables the eyes to focus on a single point in near vision.

The ?front window? of the eye. Transparent front part of the globe shaped like a slightly domed cap. It is the primary focusing structure with the lens. Transparent membrane in the front of the eye that covers the iris, pupil, and anterior chamber and provides most of an eye’s optical power.

Sightless area within the visual field of a normal eye, where the optic disc attaches the optic nerve to the eye. Caused by absence of light sensitive photoreceptors where the optic nerve enters the eye.