Refractive surgery eliminates or reduces
the need for glasses by altering the shape of the cornea, thus changing
the way the eye focuses light. These procedures are performed in
only a few minutes using anesthetic eye drops. Most patients see
better immediately. Dr. Khouri had the LASIK procedure performed
on himself. He strongly believes that LASIK is an excellent procedure
yielding permanent results.
(laser in-situ keratomileusis) is used to correct nearsightedness,
farsightedness, and astigmatism using the Excimer laser. This
laser procedure was developed in South America, where Dr. Khouri
learned it from one of the world’s first -- and most experienced
Prior to the 1980s, physicians would
make incisions to reshape the surface of the cornea. The goal of
this procedure was to reduce or eliminate a lifetime of dependence
on corrective lenses. Since these incisions are about 90% deep,
the structural integrity of the cornea was compromised making it
more prone to injury and more likely to cause fluctuations in vision.
Researchers found that the technologically
advanced excimer laser was extremely accurate. Its cool ultraviolet
beam caused no thermal damage to the corneal tissue as compared
to other lasers. Now in its second decade of use, the excimer laser
has achieved utmost precision that it can remove tissue with up
to 0.25 microns of accuracy.
Laser vision correction also added
predictability, stability, and safety to the surgical correction
of corrective lenses. The first human eye ever treated with laser
vision correction using photorefractive keratectomy (PRK) was in
the U.S. in 1987. This patient achieved 20/20 vision and is still
20/20 more than a decade later. In PRK, tissue is removed from the
surface layer of the cornea, the laser reshapes the underlying superficial
layer, and the surface layer is allowed to heal over by placing
a contact lens for three days.
LASIK was developed and first performed
in South America in 1991, primarily because this area is not subject
to the strict FDA regulations of the U.S. There have been no long
term problems reported with LASIK since then. Most experts in the
field are confident that the cornea of the patients will remain
stable permanently, as long as the safe limit of tissue removal
by the laser is not exceeded during the surgery in the case of high
Since LASIK is performed in a deeper
layer under a protective flap of corneal tissue, healing is faster
with less risk of scarring or corneal haze, minimal post-operative
discomfort, and more rapid visual recovery as compared to PRK.
THE LASIK PROCEDURE
Anesthetic eye drops are instilled
to numb your eye completely. A holder is then placed between the
eyelids to prevent you from blinking.
An instrument called a microkeratome
is used to make a protective corneal flap. You may feel a little
pressure, but not pain, during this process. While you are asked
to look directly at a red blinking light, the laser reshapes the
cornea over a period ranging from a few to several seconds (depending
on the nature of your prescription). The protective flap is folded
back into place where it adheres securely without the need for stitches.
Some patients may experience mild discomfort lasting about 12 to
ARE YOU A CANDIDATE
Ideal candidates are over 18 years
of age, have held a stable prescription for over a year, and have
healthy corneas. People with certain medical conditions may not
qualify. If you have presbyopia, a condition which requires you
to wear glasses for reading or bifocals, the laser can correct one
eye for distance and the other for near if you qualify. This special
type of vision correction is called monovision.
If you would like to find out whether
you are a candidate for this life-changing procedure please call
us at 561-366-8300 to schedule your special time for a complimentary
consultation, or click here to
send us an email.
medications are used for only one week following LASIK as compared
to several weeks following PRK, making LASIK more convenient for
the patients and minimizing any drug side effects.
of the visual results following LASIK not only depends on excellent
surgical skills but also on very accurate pre-operative measurements
of the prescription and other corneal parameters to be programmed
into the laser computer. Dr. Khouri personally takes all these preoperative
measurements in contrast to some other practices that rely solely
on their technician to take these measurements.