A cataract is a natural clouding of the eye lens which over time blocks the light and makes it difficult to see clearly. Cataracts are a normal part of the ageing process, affecting around half of all Australians aged between 65 and 74.
Most people with cataracts develop them in both eyes. However, one eye may be worse than the other because each cataract develops at a different rate. Some people with a cataract don't even know it. Their cataract may be small, or the changes in their vision may not bother them very much. Other people who have cataracts cannot see well enough to do the things they need or want to do. Cataracts may mean that a patient’s vision fails to meet legal driving standards.