There are three primary types of age-related cataracts: nuclear sclerotic, cortical, and posterior subcapsular. As a person ages, any one type, or a combination of any of these three types, can develop over time.
Just so, what causes a cataract to form?
Most cataracts are due to age-related changes in the lens of the eye that cause it to become cloudy or opaque. However, other factors can contribute to cataract development, including: Diabetes mellitus. People with diabetes are at higher risk for cataracts.
What will happen if cataract is left untreated?
In most cases, cataracts will continue to worsen over time, causing continual reduction of vision. Many people become legally blind from untreated cataracts, and cataracts can even cause total blindness if left untreated for long periods.
What is the average age for cataracts?
In fact, people can have an age-related cataract in their 40s and 50s. But during middle age, most cataracts are small and do not affect vision. It is after age 60 that most cataracts cause problems with a person's vision.