Patent ID: 11953760
Assignee: EDWARD CHOW
Field: Medical technology (Instruments)
Classification: CPC G  A | IPC A  G

Claim 0:
1. A method for generating an aspheric contact lens design for facilitating myopia control of a cornea of a patient, the method stored as a set of instructions in memory for execution by a computer processor to:
select a base curve profile for a central zone based on refractive error and one or more biomechanical properties of an eye of the patient, the base curve profile defining a compression force strength on the cornea when the contact lens is positioned on the eye, the base curve profile including a central zone tear layer thickness and a central zone radius of curvature;
define a width of a reverse zone adjacent to and encircling the central zone;
select a reverse curve profile for the reverse zone compatible with the base curve profile, the reverse curve profile defining a tension force strength on the cornea when the contact lens is positioned on the eye, the reverse curve profile including a reverse zone tear layer thickness and a reverse zone radius of curvature;
modify the base curve profile adjacent to the reverse zone by applying a selected base eccentricity curve profile for enhancing the tension force strength of the reverse zone, said applying contributing to the aspheric nature of the contact lens, the base eccentricity curve profile including an aspheric zone tear layer thickness and an aspheric zone base eccentricity;
wherein the compression force strength and the tension force strength of the contact lens cooperate to reshape corneal curvature in a mid-peripheral region to address the myopia control when the contact lens is applied to the eye.