Most age-related cataracts can progress gradually over a period of years. It is not possible to predict exactly how fast cataracts will develop in any given person. Some cataracts, especially in younger people and people with diabetes, may progress rapidly over a short time.

How quickly do cataracts develop?

Exposure to high levels of radiation can result in clouded vision in as little as two years. Exposure to lower levels of radiation can take over a decade to affect vision.

Can a cataract develop suddenly?

Cataract development is usually a gradual process of normal aging, but can occasionally occur rapidly. Many people are unaware that they have cataracts because the changes in their vision have been so gradual. Cataracts commonly affect both eyes, but it is not uncommon for cataracts in one eye to advance more rapidly.