Most cataracts are age-related. As people grow older, the proteins in the lens of their eye can start to break down, which results in the lens becoming cloudy. Over time, this clouding leads to the symptoms commonly associated with cataracts. Nobody knows what causes these changes to occur, but around 30% of adults over the age of 65 will have a cataract that affects their vision and requires surgery.
Cataracts can also be caused by drinking too much alcohol, smoking, diabetes, and taking steroids or steroid-based medication. If you’ve suffered an eye injury in the past, or had eye surgery, you may also be more likely to develop cataracts.
Cataracts are the most common cause of vision impairment and blindness in the world. There are three main types of cataracts:
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