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Disadvantages of Gas Permeable Lens
The biggest complaint about gas permeable lenses is that they require
an adjustment period. Some users report that they are uncomfortable
in the beginning, but most report that the sensation eases with wear.
Soft contacts are generally comfortable from the minute they are put
on, but that isn’t so with GPs.
They will also have to be worn regularly to keep them fitted well.
If taken out for a prolonged period of time, the wearer will have
to readjust to wearing them. It is recommended that once the decision
to wear GPs is made then, the wearer will have to stick to it or
be faced with adjustment difficulties on a regular basis.
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Another consideration is that GPs need to be rubbed when cleaning
them, rather than simply soaked. In addition some people experience
a blurring of their vision temporarily after the lenses are removed.
Although this is a temporary condition, some people have reported
the sensation as disconcerting.
Are Gas Permeable Contacts For Everyone?
There seems to be every indication that gas permeable contact lenses
are appropriate for most people who need corrective lenses.
For people who are interested in changing their appearance using
contacts, colored gas permeable contact lenses are available. In
fact, gas permeable contacts come in a wide variety of colors and
effects.
Additionally special prescriptions such as for people who
have an astigmatism or presbyopia, (common reduction in vision that
is age related) are available as are prescriptions for those who
need bifocals.
The prescription for bifocals can be accommodated in two
ways. An individual may have both prescriptions (for nearsightedness,
and farsightedness) built in on each lens. Or one eye may be prescribed
for nearness and the other eye for farsightedness.
For astigmatism, the prescription to compensate for irregularities
on the surface, are built into the prescription. A proper examination
and consultation will be necessary to determine if GPs are suitable
for an individual.
Gas permeable contact lenses are an attractive alternative to corrective
glasses and soft contacts for many people. They are available to
many people who have astigmatisms and presbyopia that would not
be able to wear contacts otherwise. The technology involved in the
manufacture of GPs provides increased acuity for some people over
soft lenses and has the distinct advantage of increased circulation
and durability over soft contacts. While they are more uncomfortable
initially, after adjusting many people report satisfaction with
their choice.