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Orange County's Premier Lasik Eye Center
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Dr. Alexandra Chebil, MD
(949) 251-0229
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PRK -
photorefractive keratectomy
PRK is a form of laser vision correction in which Dr.
Alexandra removes the surface layer of the cornea (called the
epithelium) and then reshapes the corneal bed with the laser in the same
way as LASIK vision correction. This technique is usually used for
people whose cornea may be too thin to safely allow for the creation of
the corneal flap required for LASIK.
The procedure is used to
correct nearsightedness (myopia), farsightedness (hyperopia) and
astigmatism.
Dr. Alexandra will then place contact lenses over
the reshaped cornea for protection. These are to be worn until the
cornea 're-skins', or grows back a new epithelium-typically from three
(3) to five (5) days-after which time they will be removed.
Standard PRK: This is the standard PRK procedure.
After the removal
of the surface layer of the cornea, under the Standard PRK procedure,
Dr. Alexandra will use an advanced excimer laser to reshape the cornea
by removing a pre-determined amount of corneal tissue. The amount of
tissue to be removed is determined during the pre-operative assessment.
Custom Wavefront PRK: Custom PRK allows for further customization of
the standard PRK procedure to the eyes of each individual.
While
standard PRK has been a revolution in vision correction, Dr. Alexandra
also offers the latest in laser vision correction technology: Advanced
Custom Wavefront PRK. Custom Wavefront PRK is a procedure that enables
Dr. Alexandra to further customize the standard PRK procedure to your
individual eyes.
If you have a higher prescription, thin corneas
and larger-than-average pupils, then Custom Wavefront PRK is probably
the procedure that is best suited for your eyes and needs.
The Custom Wavefront PRK Advantages:
More Patients
Are Candidates
Custom Wavefront PRK allows for the correction of more patients,
including those with higher prescriptions, and even those who may have
been deemed non-candidates in the past.
Better Quality of Vision
This advanced technology can, in many cases, improve the quality of
both day and night vision compared to standard treatments. The laser is
capable of treating people with larger pupils and is better for night
time vision quality. It also minimizes the risk of night time glare and
haloes. Custom Wavefront PRK results in a corneal shape that is closer
to the normal curvature of the natural eye, providing better quality for
both day and night vision.
Increased Accuracy and Safety for
Better Results
CCustom Wavefront PRK removes 20%-30% less corneal
tissue, which is healthier and safer for the eye. Custom Wavefront PRK
is also particularly beneficial for patients with thinner than average
corneas, larger pupils and higher prescriptions. The only way to find
out if Custom PRK is right for you is to undergo our comprehensive eye
exam. There is no obligation and it's free, so you really have nothing
to lose. Book your free consultation today!
What is
the difference between PRK and LASIK vision correction?
LASIK
eye surgery involves creating a corneal flap and then restoring it after
laser treatment. With PRK, there is no flap creation. Dr. Alexandra
simply removes the outermost skin of the cornea called the epithelium,
and then uses the laser to reshape the cornea in the same way as LASIK.
This epithelial layer of skin that is removed takes three (3) to five
(5) days to grow back. During this time the eyes are protected with
contact lenses. There is a slightly longer healing period with PRK.
Why Do Some People Need and Choose PRK?
PRK
may be used if Dr. Alexandra finds that you have thinner-than-average
corneas, and there is not enough corneal thickness for a LASIK flap.
“Soft†corneas have a greater chance to bend out of shape and are also
not suitable for a LASIK flap. Therefore, PRK is the alternative.
Someone may also choose PRK if their profession causes them to be at
much greater risk of getting hit in the eye and causing flap movement
(e.g. boxers, martial artists, wrestlers or patients more prone to blows
to the face).
What are the Results of PRK Compared
to LASIK?
The visual outcome is the same whether LASIK or
PRK vision correction is performed. Both procedures are also equally
safe. The only difference is that the healing time and the number of
post-surgery visits with PRK.
Does PRK Hurt?
During surgery PRK does not hurt at all. Drops are used to
numb your eyes. It takes less than five minutes for both eyes. It is
easier to undergo than LASIK. Pain after PRK varies from patient to
patient: a few patients experience only mild discomfort, the majority of
patients experience moderate discomfort for the first three (3) to four
(4) days, and a small minority experience a lot of pain. Many
post-operative measures are established to reduce the risk of
complications and to increase the ability for a successful recovery.
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www.DrAlexandra.com
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2192 Martin, Suite 135, Irvine, CA 92612
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