glossary

A flat, rather featureless area of the ciliary body which contains relatively few blood vessels. Instruments used in vitreoretinal surgery are inserted in this region.

Thinning of the retina and retinal, pigment epithelium in the region immediately surrounding the optic nerve head. This can be seen in a number of pathologic and benign conditions.

Side vision; vision, caused by stimuli falling on retinal areas distant from the macula, toward the sides of the globe.