Intraocular lens (IOL) is a lens implanted in the eye as part of a treatment for cataracts or myopia. If the natural lens is left in the eye, the IOL is known as phakic, otherwise it is a pseudophakic, or false lens. Such a lens is typically implanted during cataract surgery, after the eyes cloudy natural lens (cataract) has been removed. The pseudophakic IOL provides the same light-focusing function as the natural crystalline lens. The phakic type of IOL is placed over the existing natural lens and is used in refractive surgery to change the eyes optical power as a treatment for myopia (nearsightedness). This is an alternative to LASIK. IOLs usually consist of a small plastic lens with plastic side struts, called haptics, to hold the lens in place in the capsular bag inside the eye. IOLs were conventionally made of an inflexible material (PMMA), although this has largely been superseded by the use of flexible materials, such as silicone. Most IOLs fitted today are fixed monofocal lenses matched to distance vision. However, other types are available, such as a multifocal intraocular lens that provide multiple-focused vision at far and reading distance, and adaptive IOLs that provide limited visual accommodation. Multifocal IOLs can further be, Trifocal IOLs or extended depth of focus (EDOF) lenses. More than six million lenses are implanted annually. The procedure can be done under local or topical anesthesia with the patient awake throughout the operation.
Flushing may refer to:

Places
Flushing, Cornwall, a village in the United Kingdom
Flushing, Queens, New York City
Flushing Bay, a bay off the north shore of Queens
Flushing Chinatown (法拉盛華埠), a community in Queens
Flushing Meadows, a park in Queens which includes multiple venue, such as the location of the US Open tennis tournament
Flushing River, in Queens
Flushing, Michigan, a city in Genesee County
Flushing, Netherlands, an English name for the city of Vlissingen, Netherlands
Flushing, Ohio, a village in Belmont County
The Flushing, a building in Suffolk, England
Flushing Township, Belmont County, Ohio
Flushing Township, Michigan

Other uses
Flushing (military tactic), related to skirmishing
Flushing (physiology), the warm, red condition of human skin
Flushing dog, a hunting dog
Flushing hydrant, a device to flush water mains
Flushing Remonstrance, a demand for religious liberty made to Peter Stuyvesant, the Governor of the Dutch colony of New Netherland, in 1657

See also

Vlissingen (disambiguation), also called "Flushing"
All pages with titles beginning with Flushing 
All pages with titles containing Flushing
Flush (disambiguation)