A cataract is a clouding of the lens in your eye. It affects your vision. Cataracts are very common in older people. By age 80, more than half of all Americans either have a cataract or have had cataract surgery. 

A cataract can occur in either or both eyes. It cannot spread from one eye to the other.

Common symptoms are: 
•    Blurry vision 
•    Colors that seem faded 
•    Glare – headlights, lamps, or sunlight may seem too bright. You may also see a halo around lights. 
•    Not being able to see well at night 
•    Double vision

•    Frequent prescription changes in your eyewear

Cataracts usually develop slowly. New glasses, brighter lighting, anti-glare sunglasses, or magnifying lenses can help at first.

Surgery is also an option. It involves removing the cloudy lens and replacing it with an artificial lens. Wearing sunglasses and a hat with a brim to block ultraviolet sunlight may help to delay cataracts.