GLOSSARY

ARGON LASER An ophthalmic instrument which generates highly focused and amplified light energy, used in the treatment of several ophthalmic diseases, including diabetic retinopathy and macular degeneration.

CMV Cytomegalovirus, a common virus which may infect the retina in immunocompromised individuals.

CRYOPEXY Creating a retinal adhesion using a freezing probe in the repair of retinal tears and detachments.

DIABETES A metabolic disease which impairs the body's ability to control the use and storage of sugar.

DIABETIC RETINOPATHY The diseased condition of the retinal blood vessels associated with diabetes.

EDEMA Accumulation of fluid within a body tissue.

FLASHES Momentary light flashes in the eye that may resemble sparks or lightning. This is always a significant symptom.

FLOATERS Moving opacities in the vitreous that may appear as spots, cobwebs or threads in the vision.

FLUORESCEIN ANGIOGRAPHY A specialized diagnostic technique in which a fluorescent dye is injected intravenously and photographed in a rapid sequence as it courses through the blood vessels of the retina.

HEMORRHAGE Leakage of blood across damaged blood vessel walls.

MACULA The small central area of the retina responsible for sharpest vision.

MACULAR DEGENERATION Decreased functioning of the central retina, usually age-related, that causes difficulty with central vision such as reading.

NEOVASCULARIZATION Abnormal proliferation of new blood vessels in an attempt to nourish tissues deprived of adequate oxygen.

PHOTOCOAGULATION Heat cauterization of tissues resulting from absorbtion of focused laser light.

PROLIFERATIVE RETINOPATHY An advanced stage of diabetic retinopathy characterized by the appearance of neovascularization of the retina.

RETINA The light-sensitive membrane which lines the back of the eye, similar to the film in a camera.

RETINAL DETACHMENT A separation of the light sensitive retina from its support in the eye, resulting in loss of vision. Immediate treatment is usually indicated.

RETINAL TEAR A tear, rip, or hole in the retina that may lead to retinal detachment.

SCLERAL BUCKLE One type of surgery to repair a retinal detachment. See also vitrectomy.

VITREOUS (GEL) The colorless, transparent jelly-like material which fills the hollow interior of the eye.

VITRECTOMY Surgery to remove the vitreous gel, which may be filled with blood or scar tissue, or to aid in the repair of retinal detachment