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00081_Field_81.txt
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1997-10-28
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759b
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23 lines
CONTRAINDICATIONS TO LENS WEAR
OCULAR REASONS
Corneal neovascularization
If a patient has neovascularization
from a previous condition or contact
lens wear, fitting the patient with
contact lenses enhances the chances
of reactiviting the neovascularization
even if the corneal vessels are empty.
If the patient is fitted, RGP lenses
may be preferred (unless the original
neovascularization was due to rigid
lenses) since they supply more oxygen
to the cornea and do not deprive the
peripheral cornea of oxygen.
If hydrogel lenses are fitted, use a thin and medium to high water content lens to increase oxygen transmissibility.
The patient should not be wearing the lenses on an extended wear schedule.