A cataract is a clouding of the eye’s natural lens. Most cataracts develop as a result of the natural aging process. Around the age of 60, the lens starts to become cloudy in some spots; in subsequent years, the clouding spreads. As a greater portion of the lens becomes cloudy, light entering the eye can no longer focus properly on the retina. This causes objects to appear hazy, cloudy or blurry.
Additional symptoms of cataracts include the following:
- Sensitivity to light
- Glare
- Poor night vision
- Frequent changes in glasses or contacts prescription
- Double vision
- Faded or yellowing colors
Not all cataracts are caused by the effects of age. Early-onset cataracts may be caused by an eye injury or eye surgery, pre-existing medical condition such as diabetes or prolonged use of medications such as corticosteroids.
In the early stages of cataracts, glasses can usually provide the visual clarity needed for everyday activities. But as cataracts worsen, you may find that objects are blurry or hazy whether you wear your glasses or not.