Intraocular lens

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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

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