What are Cataracts? Cataracts are a normal condition of ageing. They occur when the lens behind the eye becomes cloudy, resulting in blurry vision and an increase in glare. What causes Cataracts? There are a few common causes of cataracts. They include trauma to the eye, UV exposure and diseases such as diabetes. However, in some cases babies can be born with cataracts. What treatment is there for Cataracts? Untreated cataracts can cause blindness. When vision becomes significantly affected to impact on activities such as driving, then cataract surgery is recommended. This surgery is conducted by an Ophthalmologist to which your Optometrist will arrange a referral. However, in the early stages of cataracts, UV protection is advised to slow the progression of the cataract.