A cataract scatters and blocks the light as it passes through the lens, preventing a sharply defined image from reaching your retina. Age-related and other medical conditions cause proteins and fibers within the lenses to break down and clump together, clouding the lenses.Īs the cataract continues to develop, the clouding becomes denser. The lens focuses light that passes into your eye, producing clear, sharp images on the retina - the light-sensitive membrane in the eye that functions like the film in a camera.Īs you age, the lenses in your eyes become less flexible, less transparent and thicker. The lens is positioned behind the colored part of your eye (iris). How a cataract formsĪ cataract is a cloudy lens. Long-term use of steroid medications, too, can cause cataracts to develop. Cataracts can also be caused by other eye conditions, past eye surgery or medical conditions such as diabetes. Some inherited genetic disorders that cause other health problems can increase your risk of cataracts. Proteins and fibers in the lens begin to break down, causing vision to become hazy or cloudy. Farsightedness: Difficulty seeing objects up close causes blurry vision for objects near you.Most cataracts develop when aging or injury changes the tissue that makes up the eye's lens. Epiretinal membrane/cellophane maculopathy: Membrane forms over the retina (often inside the macula) causes blurred vision that may become very distorted.Dry eyes: Eyes feel dry, gritty, or scratchy causes blurry vision.Diabetes: Blood sugar is too high causes blurry vision, double vision, and vision loss.Cataracts: Eye lens becomes cloudy causes blurry vision, halos, vision loss, and problems seeing in dim light.Brain tumor: Growth of abnormal cells in the brain causes double or blurry vision and vision loss.Autoimmune conditions: Disorders that cause the immune system to attack healthy tissues and organs in the body causes blurry vision and vision loss.Astigmatism: Problems with the curvature of the eye causes blurry vision at both near and far distance.Aneurysm: Enlargement of an artery causes vision loss.
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