A cataract is a gradual clouding of the natural lens of the eye. As a cataract forms, more of the entering light is scattered rather than focused precisely on the retina. Cataracts are most commonly formed as part of the natural aging process. At the age of 60, over 50% of the population already have signs of cataracts. Cataracts can also form in younger patients. These cataracts may form due to injury to the eye, diabetes, or long-term use of certain medications.
Cataracts associated with aging often take years to develop. The rate of progression varies with each patient. There are no eye exercises, dietary supplements, or optical devices proven to prevent or cure cataracts. Protection from excessive sunlight may slow the progression of cataracts. Glasses with UV protection should be worn as much as possible.
What Causes Cataracts?
- Diabetes or other eye diseases
- Injury to the eye
- Some medications such as steroids
- Too much ultraviolet (UV) light, especially from sunlight
What Are the Symptoms?
- Blurry vision
- Details are hard to see
- Glare when driving or reading
- More light is needed to read
- Some colors seem dull
- Glasses prescription keeps changing
- Double vision in one eye