Style of glasses that wraps around the ear, to keep them well-fastened.

Clouding of the natural lens of the eye, resulting in impaired vision. Cataract surgery involves removing the eye's natural lens, and replacing it with an artificial one.

Layer of blood vessels and pigments (usually brown or blue) that lies beneath the sclera (the white of the eye). Often mistakenly called the iris.

Part of the eye that contains a focusing muscle and connective tissue.

Serious eye infection usually found in those with immune problems, such as AIDS patients; symptoms include floaters, blind spots, blurry vision and vision loss.

protein in bones and connective tissue, it is also present in the eye. One type of vision correction surgery now under FDA review heats collagen around the edges of the cornea (which lets light into the eye). This procedure reshapes

Partial or total inability to distinguish specific colors.

Condition caused by prolonged computer use, and characterized by eyestrain, blurred vision, headaches and dry or irritated eyes.

A photosensitive receptor in the retina that helps you to see color.

membrane that lines the visible part of the eye and the inner surface of the eyelid.

Inflammation of the conjunctiva.

Eye drops for contact lens wearers; regular eye drops can discolor contact lenses.

The least amount of contrast that you can still see.

The clear part of the eye covering the iris and pupil; it lets light into the eye, permitting sight.

A tearing or puncture of the cornea.

Devices (such as rings or contacts) placed in the eye, usually to correct vision.

Type of vision correction surgery where a doctor inserts a tiny plastic ring into the cornea (which lets light into the eye). This ring reshapes the cornea, helping it to focus light better onto the retina so you can see better. The ring

Wound in the surface of the eye caused by injury, dryness due to lack of tear production, or infection.

Type of strabismus (a misalignment of the eyes) where one or both eyes point inward, toward the nose.