Intelligent corneal procedure advisor

A method for generating a cylinder compensation and a spherical compensation for a corneal surgical procedure on an eye, the method comprising:

• determining a topographic vector from a topographic corneal map of the eye, the topographic vector indicating a magnitude and a direction of an optical effect of a corneal talus;
• determining an epithelial topographic thickness refractive vector from an epithelial topographic/thickness corneal map of the eye, the epithelial vector indicating a magnitude and a direction of an optical effect of an epithelial talus;
• determining a posterior astigmatism vector and an anterior astigmatism vector for the eye;
• generating an interior astigmatism vector using the topographic vector, the epithelial topographic thickness vector, the posterior astigmatism vector, the anterior astigmatism vector, and a manifest astigmatism vector;
• generating the cylinder compensation of a treatment recommendation using the interior astigmatism vector and the posterior astigmatism vector;
• and
• generating the spherical compensation of the treatment recommendation using an initial spherical compensation modified by a topographic addback modifier and a cylinder addback modifier;
• where the topographic addback modifier is a value indicating a combined refractive effect of a difference between a height of a highest talus and an amount of tissue removed from the center of the cornea associated with the treatment recommendation and a difference between an epithelial talus thickness and an average epithelium thickness of 50 microns;
• and
• where the cylinder addback modifier is a value of one half a difference between a magnitude of the manifest astigmatism vector and a magnitude of the cylinder compensation.

A computer program product for generating a cylinder compensation and a spherical compensation for a corneal surgical procedure on an eye wherein the computer program product is not a transitory signal per se, the computer program product comprising instructions executable by one or more processors to cause the one or more processors to perform a method comprising:

• determining a topographic vector from a topographic corneal map of the eye, the topographic vector indicating a magnitude and a direction of an optical effect of a corneal talus;
• determining an epithelial talus vector from a topographic/thickness corneal epithelial map of the eye, the epithelial talus vector indicating a magnitude and a direction of an optical effect of an epithelial talus;
• determining a posterior astigmatism vector and an anterior astigmatism vector for the eye;
• generating an interior astigmatism vector using the topographic vector, the posterior astigmatism vector, the anterior astigmatism vector, and a manifest astigmatism vector;
• generating the cylinder compensation of a treatment recommendation using the interior astigmatism vector and the posterior astigmatism vector;
• and
• generating the spherical compensation of the treatment recommendation using an initial spherical compensation modified by a topographic addback modifier and a cylinder addback modifier,
• where the topographic addback modifier is a value indicating a combined refractive effect of a difference between a height of a highest talus and an amount of tissue removed from the center of the cornea associated with the treatment recommendation and a difference between an epithelial talus thickness and an average epithelium thickness of 50 microns, and
• where the cylinder addback modifier is a value of one half a difference between a magnitude of the manifest astigmatism vector and a magnitude of the cylinder compensation.