A cataract is the clouding of the clear lens of the eye. This clouding prevents light from passing through. The result is blurry vision or other vision loss, depending on the cataract's location and size. Cataracts can make engaging in regular activities more difficult.
Most cases of cataracts develop after the age of 40, although you probably will not notice symptoms until after the age of 60. More than 50% of people over the age of 80 have had cataracts.
Some risk factors of cataracts include:
Having a family history of cataracts
Using alcohol regularly
Living in an area with pollution