Your eye has a clear lens inwhich light passes through, allowing you to see. When this lens loses it transparency, the cloudy tissue that develops is known as a cataract.
Cataracts cause progressive and painless loss of vision. The lens clouds naturally as we age, so people over the age of 65 usually see a gradual reduction of vision. It is unknown what causes cataracts. Cataracts in younger people can result from an injury, certain medications or illness such as diabetes. Prolonged exposure to ultraviolet light may also play a role in the formation of cataracts. Studies have shown that people who smoke have a high risk of developing cataracts then non-smokers.
Some indications that a cataract may be forming are:
- Blurred or hazy vision
- Double vision
- Poor vision in bright light
- Seeing halos around lights
- Poor vision at night
- Yellowish tinged vision
- Frequent changes in eyeglasses or contact lens prescription