Encyclopedia > Contact lens

  Article Content

Contact lens

A soft contact lens.
A contact lens is a corrective or cosmetic lens placed on the cornea[?] of the eye atop the iris.

Made of various kinds of plastic, contact lenses come in a number of varieties, including hard and soft (although soft is by far more common now), and disposable and extended-wear. The specific dioptre needed to treat the patient's condition can be prescribed by an optometrist and provided by an oculist[?].

Tinted contacts, which may or may not be prescription but are tinted to change the colour of the iris, are used for cosmetic reasons.

All Wikipedia text is available under the terms of the GNU Free Documentation License

  Search Encyclopedia

Search over one million articles, find something about almost anything!
  Featured Article

... it merely designated anyone who assumed power for any period of time without a legitimate basis of authority. The first to have the title of "Tyrant" wa ...

This page was created in 26.7 ms