Laser Based Techniques to Correct Eye-refractive-errors

LASIK – Most Common Laser Eye Surgery

Most commonly performed laser eye surgery to treat types of refractive errors in eye is ‘Laser-Assisted in Situ Keratomileusis’. In short, it is also known as LASIK. This type of procedure is being performed on patients who are suffering from myopia known as nearsightedness, hyperopia known as farsightedness and astigmatism. LASIK procedure reshapes the cornea to enable light to entering the eye to be properly focused onto the retina for clearer vision. There were times when surgical-procedures were the only option. They were painful as they were associated with use of surgical-equipments and then stitching the treated area etc. The recovery duration was long and was very painful. But, laser eye correction surgery has marked a great success rate due to its following benefits:

  • Laser eye surgery is pain-free in most cases.
  • It does not take longer time. It can be completed within 15 minutes for both eyes.
  • The result is improved vision, usually be seen in as little as 24 hours.
  • This procedure helps in eliminating use of eyeglasses or contact lenses.

Process of Laser Eye Surgery

As there are different types of laser eye correction procedures available, expert eye-doctor will determine if one of these procedures is suitable for patient’s condition and, if so, which technique is best! The process involved starts with, use of either a mechanical surgical tool called a microkeratomeor or a femtosecond laser. This is to create a thin, circular flap in the cornea. Eye-surgeon uses it to create a flap and then folds back the hinged flap to access the underlying cornea. Surgeon removes some corneal tissue with the help of an excimer laser. This highly specialized laser uses a cool ultraviolet light beam. This light beam is used to remove microscopic amounts of tissue from the cornea to reshape it. So it more accurately focuses light on the retina for improved vision. Once this procedure is done and laser reshaped the cornea, the flap is then laid back in place to cover the area where the corneal tissue was removed. Then the cornea is allowed to heal naturally. This type of treatment requires only topical anesthetic drops. There are no bandages or stitches required.


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