What is LASIK?

LASIK is a surgical procedure that uses laser technology to reshape the cornea. It corrects vision conditions including near-sightedness, far-sightedness and astigmatism. LASIK is performed using anaesthetic eye drops in a two-step procedure:

  • Firstly, a thin, circular flap is made in the cornea using a microkeratome or femtosecond laser. The surgeon then folds the flap out of the way.
  • In the second step, the corneal tissue underneath the flap is reshaped using an excimer laser (a cool ultraviolet light beam) to remove microscopic pieces of tissue from the surface of the cornea in order to reshape it. The flap is then laid back in place.

The procedure is quick and virtually painless. Today, LASIK features advanced technologies including:

  • 3D digital mapping of the eye
  • Wavefront-guided or optimised excimer lasers
  • Microkeratome or femtosecond laser flap technology

These advanced technologies provide superior safety and precision, enabling surgeons to customise procedures for the patient and provide better visual outcomes.

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Answers to questions about LASIK, PRK, SMILE and vision-correcting cataract surgery.


ARSC’s vocabulary of vision