About LASIK Surgery
LASIK is laser vision-correction in the blink of an eye . The ultimate solution to replacing contact lenses and spectacles.
What is LASIK?
LASIK stands for ‘Laser In-Situ Keratomileusis’ which means ‘ to shape the cornea within its layers with the use of the Excimer laser’.
Hi-tech solution combining advanced computer technology with laser precision:
LASIK is a skilled procedure that combines the state-of-the-art computer technology with advanced laser precision. While the earlier laser procedure viz PRK treated the surface of the cornea, LASIK treats the inner tissue of the cornea and restructures it in a manner which grains down myopia (minus power) and hypermetropia (plus power).
LASIK Knowledge Centre:
- First, the eye surgeon uses an instrument known as a microkeratome to make a thin flap of the outer layer of the cornea.
- Then he folds back the flap, which remains attached on one side.
Visual recovery is rapid and there is little or no post operative pain.
- Next, he uses the cool laser light from the Excimer laser to 'ablate'' i.e. remove the pre-determined amount of tissue to reshape the cornea with great accuracy and corrects the individual's refractive error.
- The cornea is made flatter to treat near-sightedness, and steeper to treat far-sightedness and/or more spherical to correct astigmatism.
- Finally, after the laser is administered, he lays back the corneal flap in its original position, where it bonds itself instantly.
- Due to the extraordinary natural bonding qualities of the cornea, no stitches or sutures are required. An eye-patch is not required.
LASIK treats low to moderate and high refractive errors.
Is LASIK your remedy to refractive errors?
LASIK is the ideal remedy for:
- Any person who would like to get rid himself/herself from dependency on glasses or contact lenses.
- Any professional in various sports like swimming, cricket, squash, badminton, skiing, tennis and other outdoor sports.
- Anyone seeking employment in the armed forces or merchant navy and professional pilots and individuals with interest in acting and modeling.
- People who are intolerant to contact lenses (soft, semi-soft and hard) which give rise to irritation, watering and redness of the eyes.
- Anyone who would like to discard spectacles and contact lenses for cosmetic reasons.
Lifestyle benefits of LASIK:
See what you have been missing...
- Clear natural vision without the hassles and inconvenience of contact lenses.
- An opportunity to choose your preferred career whether it is IPS, defense services, commercial pilot, modeling or acting.
- Better vision for recreational sports like water, winter and contact sports.
- You can look forward to the best marriage prospects with a partner of your dreams.
- A natural appearance without glasses and a new visual freedom for all aspects of life.
- Most patients are able to pass a driver's license test without their glasses or contact lenses.
- Above all, one can look forward to a clear, natural vision and a pleasing appearance for years to come.
Pre-qualification for LASIK treatment:
All individuals above the age of 17-18 years can undergo LASIK procedure.However a thorough work-up is necessary before patient selection.
The following criteria are essential before a patient can opt for this procedure.
- Age more than 17-18 years.
- Contact lens wear should be discontinued for a period of three days in case of soft contact lens and 1 week in case of semi-soft (RGP) contact lenses.
- Myopia: - 1.00 D to -18.00D.
- Hypermetropia: +1.00 D to + 6.00 D.
- Astigmatism: +/- 1.00 D to +/- 6.00 D.
- Stable refraction i.e. no change in prescription power for six months.
These tests are done prior to the LASIK procedure at our Centre and it takes about forty-five minutes.
- Refraction : To check the correct number of spectacles
- Corneal topography : To map the power of cornea
- Corneal pachymetry : To measure the thickness of cornea
- Keratometry : To measure the curvature of cornea
- Slit-lamp examination : To assess the condition of the cornea
- Tonometry : To check the eye pressure
- Retinal check-up
Do's and Don'ts of LASIK:
The recovery time and time taken for healing differs from patient to patient. Patients also have different levels of tolerance in performing various activities after the procedure. Some get back to work the next day without any problem.
Nevertheless, the following care should be taken after LASIK:
- Do not rub your eyes for one month.
- Avoid swimming, steam bath, sauna and Turkish bath for one month. Bathe carefully closing your eyes under the shower and do not allow water to go in the eyes.
- Avoid gardening or field work or dirty and dusty environment for one week.
- You can watch TV or read in moderation within two days of the procedure. Though not harmful, doing these activities for a long time could make you feel tired and cause strain in the eyes.
- Post-operative care is as important as the surgery. Do not forget to use the prescribed eye- drops.
- It is advisable to use sunglasses for two weeks when going outdoors to avoid glare.
Advantages of LASIK over PRK:
Today virtually all refractive surgeons worldwide consider LASIK to be the procedure of choice , compared to the conventional PRK Excimer laser procedure.
The following are some of the benefits of LASIK:
- Quick visual recovery.
- Very low infection rate.
- Very low risk of scarring.
- High degree of predictability.
- Low enhancement rate.
- Relatively quick procedure.
- Minimal discomfort.
- Preservation of all corneal layers.
- Excellent ocular integrity post-treatment.
- Wide range of correctable prescriptions.
Comparative benefits of LASIK over PRK
(Photo Refractive ratectomy)
|Modern and safe technique.
|Laser is administered under the corneal flap. Epithelium remains intact and therefore better visual results.
||Laser is administered after scraping the epithelium of the cornea.
|Safe, precise and more accurate.
||Chances of recurrence and under or over correction are high
|Effective in correcting:
- Myopia : 1.00 to 18.00 D
- Hypermetropia: +1.00 to 6.00 D
- Astigmatism: -/+1.00 to -/+6.00 D
|Cannot be done safely in:
- Myopia: above - 5.00 D
Hypermetropia: above + 3.00 D
|Intact epithelium and therefore chance of infection is minimal
||Chance of infection is high due to open epithelial wound.
|Clearer vision with preserved integrity of the cornea.
||Clearer vision with preserved integrity of the cornea.
|No patching of the eye is required.
||Eye is patched for 3 days.
|Antibiotic steroid eye drops given for 7 days only.
||Antibiotic steroid eye drops to be used for 3-6 months
|Visual recovery in 7 days.
||Visual recovery takes 3-6 months.