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I'm Dr. Edward Weaver with Wilmington Optometry in Wilmington, North Carolina on behalf of
Expert Village to tell you how to care for you contact lenses. Gas permeable hard lenses
are an effective way of correcting vision for people with a stigmatism. The vision is
good; the vision is crisp. The comfort may not be a good initially, but usually after
a week of adaptation, the comfort is usually good with the gas permeable hard lens also.
The another advantage of gas permeable lenses is that their effective way of correcting
people with when they need bifocal correction for glasses. There are bifocal gas permeable
lenses that work very well. There are bifocal soft lenses also, but the bifocal gas permeable
lenses are especially good for crisp vision. Gas permeable lenses are used now by practitioners
because the comfort is not immediate like it is for the soft lens. Most new contact
lens patients want immediate comfort with their contacts. Gas permeable have been more
prevalent in the past, but are still used a lot for specialty type purposes like keratoconus,
which is an eye condition that causes the cornea to change shape rapidly. The gas permeables
are still used extensively for that, and I'd say more so for bifocal than anything else.