To have a Refractive error in eyes is a very common problem in our life. About 40% of the total population wear Glasses or Contact lens. To have a Refractive error is a natural thing. By using proper Glasses, we can solve the problem of a Refractive error. But a person suffers a lot because of Glasses. For e.g. The Glasses can create a problem in sports, swimming, driving and many other routine works. The Glasses might be a problem to get the job in several professions like Navy, Airfroce, Police, Agriculture and some other Industries. A very common and major problem with Glasses is a cosmetic problem.
The promise of non-spectacle vision has been a dream for centuries. Contact lens offered a solution to the cosmetic aspect but placed the cornea at risk, if care guidelines were not strictly adhered to. Many patients simply cannot tolerate contact lens for medical reasons and many are not willing to perform the daily maintenance required.
Our hospital is trying to eliminate the need of glasses for people since years. In these efforts the technique known as Redial Keratotomy (RK) was the method of choice during 80's. But the technique remained always controversial. These days the most common corneal refractive procedures are Photo Refractive Keratectomy (PRK) and Laser in situ keratomilusis (LASIK).The most advanced technique in LASIK is C-LASIK which requires wavefront Laser. C-LASIK or wavefront Laser is becoming more and more popular world wide.
In PRK, an Excimer laser is used to ablate the surface of the cornea, flattening it as appropriate of the individual patient. Here laser beam is directly applied on the corneal surface and remove few microns of the corneal tissue and change the corneal curvature PRK technique can correct only minor Refractive error.
Lasik or Laser in situ Keratomileusis reshapes the cornea by using a laser beam, there by altering its curvature.Calculated change in nthe curvature of the cornes corrects the vision.After this change the image is focused at a right place on the retina and this makes picture clear without glass.
The procedure is very short and comfortable. Using an instrument called Microkeratome a thin flap of corneal tissue of 90 to140 micron is raised. Laser is applied on the corneal bed and the corneal flap is reposited back, where it bonds without the need of stitches.
Advanced Excimer Laser is used to perform LASIK and PRK. Netradeep eye hospital is equipped with the Most advanced Excimer Laser machine, ALCON- WaveLight EX-500 for Customised & Optimised Lasik and PRK. With this machine we can do the refractive surgery with the great precision and safety.Eximer Laser works by removing some microns of the corneal tissue.
In Myopia (short sightedness), central corneal tissue is removed and by that curvature of the cornea is reduced. In Hypermetropia (far sightedness) curvature of the central cornea is increased by removing mid peripheral corneal tissue.
WHO CAN UNDERGO LASIK SURGERY :
If you fulfill the following criteria, then don't wait, come forward and forget your glasses.
1. Age between 18 and 45 years.
2. Stable number for more than last 1 year.
3. Have healthy eye.
4. There should not be any sign of ocular pathology like Keratoconus and systemic pathology like collagen disease.
5. In pregnancy this surgery should be avoided.
6. Patient's expectation and understanding is important criteria before undergoing Lasik surgery.
1. The machine can correct myopia up to -14 D. and hyperopia up to +6 D. and astigmatism up to 6.0 to 7.0 D.
2. This is an irreversible technique.
3. Contrast sensitivity is not so good as glasses and contact lenses (this problem is almost solved by C-LASIK.