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When
is LASIK not for me?
You
are probably NOT a good candidate for refractive surgery if:
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You
required a change in your contact lens or glasses prescription in the past
year. This is called refractive instability. Patients who are:
-
In their
early 20s or younger,
-
Whose
hormones are fluctuating due to disease such as diabetes,
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Who are
pregnant or breastfeeding, or
-
Who are
taking medications such as steroids that cause fluctuations in vision,
are more
likely to have refractive instability and probably should not have a refractive
procedure.
-
You
have a disease (e.g. lupus, rheumatoid arthritis) or are on medications
that may affect wound healing. Certain conditions, such as autoimmune
diseases and immunodeficiency states, and some medications, such as retinoic
acid and steroids, may prevent proper healing after a procedure.
Contraindications
The
safety and effectiveness of refractive procedures has not been determined
in patients with some diseases. Do NOT have LASIK surgery if you have a
history of any of the following:
-
Herpes
simplex or Herpes zoster (shingles) involving the eye area.
-
Glaucoma,
glaucoma suspect, or ocular hypertension.
-
Eye diseases,
such as uveitis/iritis (inflammations of the eye) and blepharitis (inflammation
of the eyelids with crusting of the eyelashes).
-
Eye injuries
or previous eye surgeries.
Other
Risk Factors
Your
doctor should screen you for the following conditions or indicators of
risk:
-
Large
pupils. Make sure this evaluation is done in a dark room. Younger patients
and patients on certain medications may be prone to having large pupils
under dim lighting conditions. This can cause symptoms such as glare, halos,
starbursts, and ghost images (double vision) after surgery. In some patients
these symptoms may be debilitating. For example, a patient may no longer
be able to drive a car at night or in certain weather conditions, such
as fog. New software now available has reduced but not eliminated this risk.
-
Thin
Corneas. The cornea is the thin clear covering of the eye that is over
the iris, the colored part of the eye. Most refractive procedures change
the eye’s focusing power by reshaping the cornea (for example, by removing
tissue). Performing a refractive procedure on a cornea that is too
thin or has too few cells lining the back surface (endothelial cells) may
result in blinding complications.
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Previous
refractive surgery (e.g. RK, PRK, LASIK). Additional refractive
surgery may not be recommended. The decision to have additional refractive
surgery must be made in consultation with your doctor after careful consideration
of your unique situation.
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