Machine-readable medium, keratotomy system, and keratotomy method

A corneal ablation system comprising:

• an operation device for creating an integrated corneal ablation plan for correcting a defective shape and a curvature error of a cornea based on corneal status data;
• a laser control unit for controlling a laser module according to an ablation shape and an ablation amount of the cornea based on the integrated corneal ablation plan transmitted from the operation device;
• and
• the laser module for generating a laser and transmitting the laser to an optical unit under control of the laser control unit,
• wherein the operation device uses information on a curvature error (low-order aberration) of the cornea, a corneal thickness distribution map, and a posterior corneal shape map, detects a position of an eccentric posterior corneal cone through the posterior corneal shape map so as to determine a partial corneal ablation position on a peripheral part of the cornea to relieve eccentricity of a posterior corneal cone, determines partial corneal ablation shape and amount to reduce thickness deviation in view of point symmetry through the corneal thickness distribution map, completes defective shape correction by making the cornea as a symmetric cornea that has the posterior corneal cone located at a central portion of the cornea due to concentration of intraocular pressure without fluctuation in an average corneal curvature value, by calculating myopic correction corneal ablation shape and amount corresponding to a value of myopic curvature fluctuation generated when the partial corneal ablation is performed so as to form the concentration of the intraocular pressure at the central portion of the cornea that is thinned after cutting the cornea, and sums up the determined partial corneal ablation shape and amount, the myopic correction corneal ablation shape and amount, and corneal ablation shape and amount for correcting a low-order aberration that is inherently present in the cornea and executes corneal ablation with the laser, so as to complete integrated vision correction where the defective shape and the curvature error are collectively corrected.

A corneal ablation method comprising:

• collecting status information on an ablation target cornea;
• creating a partial corneal ablation plan for reducing thickness deviation of the cornea in view of point symmetry based on the collected status information;
• calculating a spherical aberration for relieving myopic curvature fluctuation generated when cutting the cornea according to the partial corneal ablation plan;
• calculating an interlocking low-order aberration that is to be combined with partial corneal ablation by summing up the calculated spherical aberration with a collected low-order aberration;
• creating an integrated corneal ablation plan by combining the partial corneal ablation plan with a corneal ablation plan for correcting the calculated interlocking low-order aberration;
• and
• cutting the cornea by using a laser according to the integrated corneal ablation plan.