The
EXCIMER LASER uses two primary vision correction surgeries-
PRK
(
Photo Refractive Keratectomy) &
LASIK
(Laser assisted In – Situ Keratomileusis).
PRK
involves removal of less than ten percent of the corneal tissue.
It sculpts the surface of the cornea, changing its curvature.
Photo
refractive keratectomy (PRK) combined with Laser Assisted In –
Situ Keratomileusis (LASIK) uses an instrument called Microkeratome
to create a thin flap of corneal tissue. This flap is folded to
the side and Excimer Laser is used sculpt the cornea. The Excimer
Laser produces an invisible beam of intense ultraviolet light,
delivered in short bursts of energy called pulses. The corneal
flap is then replaced.
Who
is eligible for LASIK?
- Patient
should be at least 18 years of age.
- Myopia
up to – 20. 0 to + 8. 0 with cylinder + /- 4.
- Stable
vision for past 6 months with no progression of myopia.
- No
pre-existing serious eye problems such as cataract, glaucoma
or keratoconus.
What
results can be expected?
The aim of the treatment is to remove dependence on spectacle
or contact Lens wear.
How
long is the treatment?
The entire procedure takes around 15 minutes and is done as a
day surgery procedure without the need for admission to hospital.
Do
I have to undergo any tests prior to Excimer Laser treatment?
Yes, preoperative corneal and retinal evaluation would have to
be carried out.
Is
it painful?
During the laser treatment, there is no pain at all. However you
may experience some ocular discomfort and watering during the
first 24 hours after surgery. It will gradually resolve by second
or third day. Painkillers and sedatives may be prescribed to ease
the pain and discomfort.
Will
my number become zero?
The aim of the laser treatment is to remove dependence on spectacles
or contact lenses or in many cases eliminate them altogether.
How
long does it take to recover?
The surface of the cornea takes 2-3 days to heal and vision will
improve thereafter. Stability in vision is achieved in 1-3 months.
When
can I resume my normal activities?
Normal activities can be resumed after 1 week. However swimming
and water sports can be resumed after 3 months.
When
can I have my other eye done?
The second eye can be done immediately after the first eye in
the same sitting or after 3 days.
