soft contact lens


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soft contact lens (SCL)

Etymology: AS, softe + L, contingere + lens, lentil
a contact lens made of a flexible plastic material that can be shaped more easily to fit the eyeball than a rigid gas-permeable lens and typically provides good initial comfort. Among the disadvantages of soft lenses are that they are more easily damaged, may not provide vision as sharp as alternative methods in certain cases, and must be disinfected periodically because they tend to harbor bacteria. Most contact lens patients are currently being fit into hyperoxygen-permeable silicone-hydrogel soft lenses.

soft contact lens

A contact lens made of flexible, translucent materials. Such lenses are more comfortable, can be worn longer, and are harder to displace than hard lenses, but there are disadvantages. They may not provide the same degree of visual acuity as hard lenses, and they require more cleaning and disinfection. Production of tears may be decreased, esp. in older patients. The soft lenses may need to be replaced every 6 to 18 months. Corneal infections can prevent further use of soft lenses and also cause permanent loss of vision. Synonym: hydrophilic lens
See also: lens
References in periodicals archive ?
The relationship between corneal shape and soft contact lens fit
Are there any measurements we are able to take as practitioners that are more predictive of soft contact lens fit?
The effect of the tear film on soft contact lens fit
If the shape of the anterior eye is not predictive of soft contact lens fit, what are the other factors that may be affecting it?
The results of studies in the 1980s showed that during blinking a soft contact lens deforms under the pressure of the eyelid.
Tear mixing under a soft contact lens is estimated as 1.
The ideal fitting soft contact lens should give full corneal coverage and good centration.
While we continue to search for the source of these increased infections, it is imperative that soft contact lens users are reminded of the importance of safe handling, storage and cleaning of their lenses," added Alfonso.
a Cessation of soft contact lens wear in the right eye
In addition to providing exceptional comfort and health benefits, the PureVision soft contact lens is designed to correct nearsightedness and farsightedness and also reduce spherical aberration, a higher order aberration of the eye that is one of the factors that can affect visual quality in low-light conditions.
d) It aids visualisation of a dislodged/split soft contact lens
The new TV spot for the Zyoptix System is the first in a $20 million TV campaign this year that also features commercials for three other key Bausch & Lomb products: ReNu(R) MultiPlus(R) Multi-Purpose Solution, the market-leading soft contact lens care solution; SofLens(R) Multi-Focal contact lenses, the No.