Friday, March 10, 2006

Glossary and Index 144

Glossary and Index

Absorptive lenses: Glasses with tinted lenses used to absorb sunlight and prevent it from entering the eye. They are used to treat photophobia and to increase contrast; 101.

Age-Related Eye-Disease Study (AREDS): A large randomized study sponsored by the National Eye Institute which proved that supplementation with vitamins C, E, beta-carotene, zinc, and copper reduce the progression of AMD; 39.

Age-Related Eye Disease Study II (AREDS II): A study just started that will test whether supplementation with lutein and zeaxanthin as well as omega-3 polyunsaturated fatty acids will reduce the progression of AMD. AREDS II will also test if lower doses of beta-carotene and zinc are as effective as higher doses in reducing the risk of progression to severe AMD; 44.

Age-Related Macular Degeneration (AMD): A disease of the central retina first manifested by drusen in the macula. The disease can progress to atrophy of the outer retina or choroidal neovascularization.

a. Dry AMD: includes drusen and atrophy; 8.
b. Neovascular or wet AMD: blood vessels have grown from the choroid under the RPE and retina. These blood vessels leak fluid and blood and cause scarring; 10.
Alcon: The pharmaceutical and instrument company that makes anecortave acetate, or Retaane®.

Amsler grid: A checkerboard pattern of vertical and horizontal lines with a fixation dot in the middle. Used by patients to check for distortion or blank spots in their central vision; 10, 12.


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