PRK Surgery and How It Differs From LASIK?

Photo Refractive Keratectomy is a laser eye surgery that is designed to correct vision problems. PRK recovery takes a bit longer than recovery from LASIK eye surgery. Both surgeries are done by changing the shape of the cornea.

Both LASIK and PRK treatment provide great visual outcomes. So why should you have to choose between PRK vs LASIK? Some patients prefer LASIK for its faster healing, and others prefer PRK for its extra safety.

What is PRK?

 
Photo Refractive Keratectomy is a type of refractive surgery to correct nearsightedness, farsightedness and astigmatism. PRK is the very first type of laser eye surgery for vision correction and is the predecessor to the popular LASIK procedure. PRK recovery takes a bit longer in terms of recovery than the LASIK procedure. PRK is still commonly performed and still offers advantages over LASIK for some patients.

PRK works by reshaping the cornea using an excimer laser, allowing light that enters the eye to be properly focused onto the retina for clear vision.

In PRK the thin outer layer of the cornea is removed and discarded prior to reshaping the underlying corneal tissue with an excimer laser. The epithelium heals itself back over the corneal surface within a few days.

What is LASIK?

 
In LASIK eye surgery, the eye surgeon makes an incision in the cornea to create a flap of tissue. The flap of tissue is lifted so the laser can be applied to reshape the inner layers of the cornea. The laser is computer controlled and reshapes the layers of the cornea to repair imperfections in curvature that lead to a distorted vision. The corneal flap is then placed back into place and heals over the reshaped part of the cornea in a few days.

PRK vs. LASIK- What’s the Difference?

 
Let’s take a look at the differences between PRK and LASIK surgery:

Difference PRK LASIK
Type Laser-based corrective vision
surgery so as to help the
patient reduce dependency on
glasses or contact lenses.
Laser-based corrective vision
surgery so as to help the
patient reduce dependency on
contact lenses or glasses
Treatment for Preferred for people who have
a thin cornea, Myopia or
Nearsightedness, Hyperopia or
Farsightedness, Astigmatism
Nearsightedness or Myopia,
Farsightedness or Hyperopia,
Astigmatism
Eligible Age 21-40 21-40
Pros Decreased depth of laser
treatment, no complications regarding corneal flap, corneal
thickness regulated
Speedy recovery, decreased
risk of post-surgery infection, lower post-operative
discomfort, peak vision
achieved quickly as compared
to PRK, both eyes can be done
at the same time
Cons Recovery slower as compared
to LASIK, increased risk of post-
operative complications,
greater post-operative
discomfort, patients sometimes
have to wait for up to one to
two weeks before operating
the second eye
Possible complications from
corneal flap, increased depth of
laser
Potential Side Effects Dry eyes, infection, night
blindness – halos around lights,
light sensitivity during night
time
Night blindness – halos around
lights, dry eyes, infection,
dislodged corneal flap, light
sensitivity during night time
Cons Recovery slower as compared
to LASIK, increased risk of post-
operative complications,
greater post-operative
discomfort, patients sometimes
have to wait for up to one to
two weeks before operating
the second eye
Possible complications from
corneal flap, increased depth of
laser
Criteria No history of dry eyes, no eye
injuries or infections within a
year, stable prescription for
minimum one year
Normal depth cornea, no
history of dry eyes, stable
prescription for at least one
year and no injuries or
infections within a year
Healing and Recovery Takes up to six months before
peak accuracy is achieved and
clarity in vision is reached.
Requires around one to three
days for blurring and
discomfort to subside
Vision improved immediately,
blurring and discomfort gone
within 24 hours
Outcome 20/20 vision or better 20/20 vision or better

 

What to Expect from PRK?

 
You will have to have a thorough eye exam conducted on your eyes which covers the following factors:

  • The size of your eye pupils
  • How moist your eyes are, to evaluate the risk of developing dry eyes after laser eye surgery and have them treated accordingly.
  • Measuring the corneal curvature, using a corneal mapping device to measure the contours of the front surface of your eye.

Corneal thickness is also measured and taken into considerationPRK can be the best procedure under certain circumstances. Your doctor will assess all the above factors before taking the decision about whether you are a suitable candidate.

What is Right For You

 
The best way to getting rid of your glasses and contacts is to visit a few of your local area eye doctors for a consultation and see if you are eligible for either or both procedures. It is possible that you may be a candidate for only one or both surgical procedures; these doctors will give you their professional opinions, options, and recommendations. It is advised that you visit a couple of eye doctors in your area and their professional opinions on what to do regarding your eyes after which you can draw up your own conclusion.

To learn more about the best laser corrective procedure for you, contact our professionals at Insight Vision Center in Fresno today!

Your email address will not be published. Required fields are marked *

*

Book your appointment

Book now & we will get back to you as soon as possible.

Call Us 559-449-5050