Striae (pronounced STREE-ah) are
wrinkles that spontaneously develop in the corneal
stromal flap after
Lasik, or
All-Laser Lasik. Striae may be caused by inappropriate
manipulation of the flap, internal stresses of the flap, trauma
to the flap, or an otherwise unstable flap. When severe, striae
may cause
ghosting and poor quality vision.
Striae is normally associated with
myopic (nearsighted, shortsighted) correction, but can occur
with
hyperopic (farsighted, longsighted) correction as well. Striae
tend to occur more often with higher corrections and may be exasperated
by other maladies, especially
Lasik
induced dry eyes.
Striae may occur after conventional or
wavefront custom Lasik.
Two Kinds of Corneal Striae
There are two types of striae, macrostriae and microstriae.
Macrostriae are relatively large folds in the Lasik flap and usually
require treatment soon after they develop. Microstriae, also called
"Bowman's Crinkles" are caused by internal stresses within the flap
and are often best allowed to resolve with healing.
Striae Treatment
Treatment for striae Lasik or All-Laser Lasik flap wrinkles includes
smoothing the wrinkled flap or a flap lift with repositioning. Lasik
or All-Laser Lasik flap wrinkles can exist entirely outside the
visual axis without causing any vision problem and would not
need to be removed.
Lasik and All-Laser Lasik Striae
All-Laser Lasik is reportedly less likely to cause striae flap
wrinkles because of a more universal flap thickness, however studies
have been inconclusive. Thinner flaps tend to be more likely to
have problems with striae than thicker flaps.
No Lasik Flap, No Striae
It is impossible to develop striae with techniques that do not
require a stromal flap, such as
PRK,
LASEK,
Epi-Lasik,
NearVision CK,
RLE, and
P-IOL because these techniques have no flap or have only a flap
of quickly reproducing
epithelial cells. Of course, each of these procedures
have their own limitations.
Contributing Problems
he most important technique to reduce the probability of striae
is to follow doctor's postoperative advice by protecting the eye
after surgery and to keep the eyes moist with
preservative-free artificial tears. Rubbing your eyes and excessive
blinking with very dry eyes can cause striae or similar problems.
If you are ready to choose a doctor to be evaluated for conventional
or custom wavefront Lasik, All-Laser Lasik, PRK, LASEK, Epi-Lasik,
NearVision CK, RLE, or any
refractive surgery procedure, we highly recommend you consider
a doctor who has been evaluated and certified by the USAEyes
nonprofit organization. Locate a USAEyes Evaluated & Certified
Lasik Laser Eye Surgery Doctor.
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