Limbal Relaxing Incisions (LRI) are truly a modification of Astigmatic Keratotomy (AK), which is a procedure to treat astigmatism. Astigmatism is present when the cornea is not spherical, i.e., it is steeper in one meridian than the opposite meridian 180 degrees away. The cornea with astigmatism may be thought of as being more football shaped rather than basketball shaped. LRI's are incisions that are placed on the far peripheral aspect of the cornea (the limbus) resulting in a cornea that is more round. The astigmatism is thus reduced and uncorrected vision is improved. There are other options in correcting an astigmatism with the advances made in laser vision correction. Consult your ophthalmologist to explore your options.
