Patent ID: 6086579
Filing Date: 2000-07-11
Classification: A61B,A61F

Abstract:
An article encoded with a computer readable program for operating a computer to obtain parameters related to a surgical procedure to correct astigmatism in the eye of a patient, said program being provided with magnitude and angle values of measured pre-operative astigmatism of an eye of a patient and magnitude and angle values of a non-zero aimed astigmatism to be achieved following surgery on the eye of the patient, said program being operative to determine parameters related to said pre-operative measured values of magnitude and angle to provide parameters concerning treatment of the cornea of the eye of the patient to correct astigmatism said program including;a routine for vectorially adding the pre-operative astigmatism and the non-zero aimed astigmatism to obtain an aimed induced astigmatism vector to obtain an aimed induced astigmatism vector representing dioptric force and axis intended to achieve said non-zero aimed astigmatism;said dioptric force and axis of said aimed induced astigmatism vector representing parameters for surgery on the eye to effect relative steepening of the cornea in a direction and magnitude corresponding to the aimed induced astigmatism vector.