Eye cataract
A clouding of the lens of the eye. The normally clear aspirin-sized lens of the eye starts to become cloudy. The result is much like smearing grease over the lens of a camera. It impairs normal vision.
There are many causes of cataracts including cortisone medication, trauma, diabetes, many other diseases and simply aging. Cataracts will affect almost all people if they are fortunate enough to live long enough.
The symptoms of cataracts include double or blurred vision and unusual sensitivity to light and glare. Cataracts can be diagnosed when the doctor examines the eyes with a viewing instrument.
The ideal treatment for cataracts is surgical implantation of a new synthetic lens after removing the natural cloudy lens. Wearing sunglasses can help prevent cataracts.
Read Also:
- Eye chart test
Eye chart test: This test measures how well you see at various distances. The eye chart itself — the usual one is called Snellen’s chart — is imprinted with block letters that line-by-line decrease in size, corresponding to the distance at which that line of letters is normally visible. The letters on Snellen’s chart are, […]
- Eye chart, Snellen's
Eye chart, Snellen’s: The familiar eye chart used to measure how well you see at various distances. Snellen’s chart is imprinted with block letters that line-by-line decrease in size, corresponding to the distance at which that line of letters is normally visible. The letters on Snellen’s chart are, not surprisingly, called Snellen’s test type. Each […]
- Eye color
Eye color: The color of the iris. The genetics of eye color are complicated. Eye color is polygenic. It is determined by multiple genes. The eye color genes include EYCL1 (a green/blue eye color gene located on chromosome 19), EYCL2 (a brown eye color gene) and EYCL3 (a brown/blue eye color gene located on chromosome […]
- Eye Institute, National
Eye Institute, National: One of the National Institutes of Health in the U.S., NEI’s mission is to “conduct and support research, training, health information dissemination, and other programs with respect to blinding eye diseases, visual disorders, mechanisms of visual function, preservation of sight, and the special health problems and requirements of the blind.”
- Eye Institute, National (NEI)
Eye Institute, National (NEI): One of the US National Institutes of Health, NEI’s mission is to “conduct and support research, training, health information dissemination, and other programs with respect to blinding eye diseases, visual disorders, mechanisms of visual function, preservation of sight, and the special health problems and requirements of the blind.” The National Eye […]