Intraocular lens
Intraocular Lens
An Intraocular Lens (IOL) is an artificial lens that is implanted in the eye during cataract surgery. The term is often abbreviated as IOL.
Pronunciation
Intraocular Lens: /ˌɪntrəˈɒkjʊlər ˈlɛnz/
Etymology
The term "Intraocular Lens" is derived from the Latin words "intra" meaning "within", "oculus" meaning "eye", and the English word "lens".
Definition
An Intraocular Lens is a lens implanted in the eye as part of a treatment for cataracts or myopia. The most common type of IOL is the pseudophakic IOL. These are implanted during cataract surgery, after the cloudy eye's natural lens (colloquially called a cataract) has been removed. The pseudophakic IOL replaces the original natural lens, and provides the light focusing function originally undertaken by the crystalline lens.
Related Terms
- Cataract: A clouding of the lens in the eye leading to a decrease in vision. Cataracts often develop slowly and can affect one or both eyes.
- Myopia: Also known as nearsightedness, a condition of the eye where light focuses in front of, instead of on, the retina. This causes distant objects to be blurry while close objects appear normal.
- Pseudophakic IOL: An artificial lens that replaces the natural lens of the eye, which has been removed during cataract surgery.
- Crystalline Lens: The natural lens inside the eye that, along with the cornea, focuses light onto the retina.
See Also
External links
- Medical encyclopedia article on Intraocular lens
- Wikipedia's article - Intraocular lens
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