What is Cataract?
A cataract is a clouding of the clear lens of your eye because of degeneration of protein inside. The cloudiness leads to low visual acuity and be unable to focus into images on retina clearly. Most cataracts develop slowly and don't disturb your eyesight so soon. However with time, cataracts will eventually interfere with your vision.
Types of cataracts
- Congenital cataract
Lenses in your eyes are naturally cloudy.
- Age-related cataract
One of the types of cataract develops by aging.
- Diabetic cataract
Diabetic cataract is related to high blood sugar, a material called sorbitol accumulates in your lens and it makes your vision cloudy.
- Skin disease cataract
As complication of atopic dermatitis, lenses become cloudy.
- Corticosteroid cataract
Caused by long-time use of steroid medication.
- Traumatic cataract
Caused by external eye wound.
- Secondary cataract
After surgery of cataract, the cloudiness develops at posterior capsule of the lens.
Clouding of the clear lens of your eye, you will recognize following symptoms;
- Clouded, blurred or dim vision
- Sensitivity to light and glare
- Frequent changes in eyeglass or contact lens prescription
- Fading or yellowing of colors
- Double vision in a single eye
Cataract itself doesn’t cause pains, foreign object sensation or inflammations.
The causes of cataract
Most cataracts develop by aging. Also, ultraviolet rays contribute to the development of cataract in daily life.
Some are related to injury, atopic dermatitis, diabetes and malnutrition, which can cause cataract to develop to younger generation. If you have experiences of eye surgery, it can increase your risk of this disease.
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