Common symptoms of cataracts include:

blurry vision

trouble seeing at night

seeing colors as faded

increased sensitivity to glare

halos surrounding lights

double vision in the affected eye

a need for frequent changes in prescription glasses

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There are several underlying causes of cataracts.

These include:

an overproduction of oxidants, which are oxygen molecules that have been chemically altered due to normal daily life

smoking

ultraviolet radiation

the long-term use of steroids and other medications

certain diseases, such as diabetes

trauma

radiation therapy