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- Aging, the most common cause
- Exposure to radiation
- Taking adrenal cortical hormones for a long time
- Excessive exposure to sunlight
- Birth defect
- Cloudy or blurry vision
Problems with light, including:
- Headlights that seem too bright at night
- Glare from lamps or very bright sunlight
- A halo around lights
- Colors seem faded
- Poor night vision
- Frequent changes in your eyeglass or contact lens prescription
- Visual acuity test—An eye chart test that measures how well you see at various distances
- Pupil dilation—The pupil is widened with eyedrops to see more of the lens and retina
- Tonometry—A standard test to measure the pressure inside the eye. Increased pressure may be a sign of glaucoma.
- Do not smoke.
- Consume antioxidants, such as antioxidant vitamin supplements.
- Wear a hat and UV-protected sunglasses when outdoors.
American Academy of Ophthalmology http://www.aao.org
National Eye Institute, NIH http://www.nei.nih.gov
The College of Family Physicians of Canada http://www.cfpc.ca
Canadian Ophthalmological Society http://www.cos-sco.ca
Cataracts. National Eye Institute. National Institutes of Health website. Available at: http://www.nei.nih.gov/health/cataract. Updated May 2009. Accessed July 13, 2009.
National Institutes of Health. Ophthalmic Genetics Newsletter. 2000 Summer;1(2).
- Reviewer: Christopher Cheyer, MD
- Update Date: 09/01/2011 -
This content is reviewed regularly and is updated when new and relevant evidence is made available. This information is neither intended nor implied to be a substitute for professional medical advice. Always seek the advice of your physician or other qualified health provider prior to starting any new treatment or with questions regarding a medical condition.
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