LASIK


  Lasik is short for laser in-situ Keratomileusis. It utilizes eximer laser to bring down the power. In this a thin flap (F) is cut from cornea by an automated machine called microtome. After this eximer laser (L) is used to vaporize the microscopic layers of the corneal tissue (S) to change its shape, allowing light rays to focus accurately on the retina. Amount of laser is fully controlled by the computer. After laser the corneal flap is replaced over to its normal position. No stitches are required. Entire procedure is painless and takes about 15 minutes and is performed under eye drop anaesthesia. It does not require hospitalization. Often, but not always, the improvement in vision is immediate. In other cases, the vision consistently improves during the first post-operative week.

POST-OPERATIVE problems

Ocular discomfort is usually mild and subsides within a few days of the surgery. Some patients experience blurry vision or gritty, dry eyes for a few days afterward. Generally patients return to work and resume most normal activities in one to two days. Five to six brief follow-up visits during the first post-operative year are important to ensure proper healing and visual improvement. Full healing occurs in 6 weeks.

RISKS AND BENEFITS

As with any surgery, there are risks involved. Fewer than 2-3% of all lasik patients experiences any unpleasant, long-term side effects. Some of these side effects include:

  There may be problems in making flap as incomplete flap, displacement of flap, holes in flap etc.
  Under or over-correction.
  Regression .
  Glare and halos particularly during the night.
  Infection.
  Problems with vision at night.
  Keratitis
  Corneal bulging.
  Dry eye.

Undesirable side effects of any type are extremely rare, but can occur for anyone. In the unlikely event that you do experience any of these effects after the procedure, your optometrist and surgeon can recommend ways to help decrease the effects.

AM I A CANDIDATE ?

As individuals, we all are unique. To get personalized information specific to your eyes and prescription, a thorough examination is necessary. The laser is capable of correcting approximately 90% of all prescriptions. However : 

   Patient less than 18 years are not a candidate for lasik.

   Power should be stabilised for one year before lasik.

   Patient with more than 8 dioptre myopia, more than 6 dioptre hypermetropia and more than 5 dioptre of astigmatism are 
    not a good candidate for the procedure.

   Adequate corneal thickness is necessary for this procedure and is checked by pachymetry.

   Eye conditions wherein lasik is not advised:

          Keratoconus

          Active eye infection.

          Severe dry eye.

          Glaucoma.

          Scleritis.

          One eyed person.

  Certain systemic disease such as severe arthritis, lupus, or uncontrolled diabetes can adversely affect proper healing and 
   preclude your candidacy for lasik.

  Pregnancy is contraindication for lasik.

 This is highly recommended for security and defence personals, pilots and persons involved in sports like water, winter and 
 contact sports.

Facts about Lasik

   Everyone does not get 6/6 vision with naked eye following lasik. So one may have to use glasses to get clear vision. 
    However most of the patients feel they can do without glasses.

   Lasik is cosmetic surgery and it does not prevent the development of myopic retinal problems and further change in glass 
    power.

 



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