Research Notes on Decreasing Vision
Decreased vision is a visual impairment that may be caused by eye disease, aging, eye trauma, or generalized (systemic) illness.1 Vision loss may be onset or gradual and may also be temporary or permanent. The common symptoms of vision loss are blurred vision, halos, blind spots and floaters.2
Fast Facts:
- The World Health Organization (WHO) classifies vision in five categories: low vision 1, 2 and Blindness 3, 4, 5.3
- Forty million people have vision at blindness 3 or worse; 50% of blind are over the age of 65.3
- Snellen chart is used to measure vision; normal vision is 20/20.3
- Common causes of decreased vision: cataracts, glaucoma, diabetic retinopathy, migraines and medications.2
Top Resources on Decreasing Vision
- A.D.A.M. (via Drugs.com): Vision Problems
- Merck Manual: Acute Vision Loss
- Gale Encyclopedia (via Healthline): Visual Impairment
- Eyeweb.org: The Differential Of Decrease In Vision
- NIOEyes.com: Vision Abnormalities
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Research Notes References
- ↑ NIOEyes.com: Vision Abnormalities
- ↑ 2.0 2.1 A.D.A.M. (via Drugs.com): Vision Problems
- ↑ 3.0 3.1 3.2 Gale Encyclopedia (via Healthline): Visual Impairment
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About this WisdomCard
- Contributor: Carolyn DeLucas
- Reviewer: Tara
- Supervised by: The OrganizedWisdom Physician Review Team
- Last update: Oct. 1, 2008
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