History
LASIK was first performed in the early 1990's in Greece. However,
the two main components of LASIK were performed separately
many years prior. Doctors in South America began performing
corneal flap surgery in the 1960's to correct myopia. Excimer
laser correction on the corneal surface was first performed
in 1987, and since then over 2 million procedures have been
performed worldwide. LASIK combines the benefits of corneal
flap surgery with the accuracy of the excimer laser.
How
Does LASIK Work?
LASIK
combines the proven techniques of both corneal flap and excimer
laser surgery, resulting in dramatic results and rapid visual
recovery. LASIK is effective for correcting most cases of
nearsightedness, farsightedness, and astigmatism. Every Nationwide
Vision patient undergoes a comprehensive series of eye tests
and examinations and has a consultation. During the consultation
the patient and surgeon discuss and plan the procedure that
best suits the individual patient. On the day of the surgery,
the patient is brought to the laser suite and positioned upon
a comfortable chair that reclines. Topical anesthetic drops
are provided to "numb" the eye. The LASIK flap is created
with a precise instrument called a microkeratome (pictured
at left). The microkeratome makes a corneal flap that is approximately
1/4 to 1/3 of the corneal thickness. The surgeon lifts the
corneal flap and folds it over (still securely attached to
the eye by its hinge). Next, the surgeon uses the excimer
laser to reshape microscopic amounts of corneal stromal tissue
to provide precise correction of the patient's refractive
error. When the laser portion of the procedure is complete
(usually less than one minute) the corneal flap is returned
to its original position where it seals back into its proper
position within minutes, and continues to heal with increasing
strength over the next few weeks.
What
Should I Expect After Surgery?
Visual
recovery is usually very quick after LASIK. Most patients
see clearly and are back at work within the first 24 to
48 hours. Since LASIK does not remove the surface layer
of the cornea (called the epithelium) there is rapid healing
with minimal discomfort. Temporary side effects following
LASIK are generally minimal. Patients may experience temporary
symptoms such as slightly drier eyes and minor increases
in light scattering. These effects are more common in
people with very large pupils and high refractive corrections.
These side effects generally diminish as the eye heals
with time. Other rare, but possible complications are
discussed with all of our patients during their refractive
assessment appointment.