Abstract: A surgical procedure to correct astigmatism comprises performing a first pair of incisions across the cornea's steepest meridian at a first optical zone and an additional two to four incisions across the bisector meridians at a second optical zone that is greater than that of the first optical zone. This procedure is effective to improve astigmatism up to 6D without many of the detrimental effects of the known procedures. The invention further comprises a set of markers to be used by a surgeon for marking on the cornea the pattern of incisions to be made following the procedure of the invention.