Astigmatic Keratotomy


Also referred to as AK. A procedure used to treat astigmatism by using a diamond shaped knife to make a small incision in the outer part of the eye. It has largely been replaced by LASIK laser eye surgery. AK can be performed after LASIK or PRK laser eye surgery to improve vision.

The procedure involves measuring eyes to decide where the incisions should be placed. Eyes are numbed with local anaesthetic drops so that you do not feel any discomfort. The cornea is marked where the incisions should be placed. Incisions are made using a blade and this changes the curvature of the cornea. The end result is that the cornea becomes more spherical. Following the procedure you are given antibiotic drops to reduce the incidence of infection. Recovery usually lasts about two days. Improved vision is experienced within two weeks and sometimes almost instantly.

AK is most suitable if you have low to moderate degrees of astigmatism. It may be unsuitable if you have any serious eye conditions or injury. Your vision should also be stable for at least a year before the procedure.


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