Myopia correction enhancing biodynamic ablation

Abstract

This invention is directed to a method for providing a LASIK or a LASEK myopia vision correction, and to a medium that has stored therein an instruction for directing a laser vision correcting laser platform to deliver a controlled biodynamic ablation according to the invention. A known biodynamic response of the eye is induced by performing a controlled laser ablation in a cornea of the eye outside of an optical zone for the nominal ablation in a laser vision correction surgery. An ablation ring, or portion thereof, outside of the optical zone produces a biodynamic flattening of the central region of the cornea which in turn provides for a decreased depth of volumetric ablation to correct a myopic refractive defect of the eye. Such controlled biodynamic flattening may provide the opportunity for laser vision correction in patients whose corneas would otherwise be too thin post-operatively to warrant laser vision correction.

Description

Invention field [0001] The present invention generally relates to the field of laser vision correction, and more specifically, to methods and devices for inducing and utilizing corneal biodynamic effects to improve laser vision correction. Background technique [0002] Currently, there are several types of methods in the field of laser vision correction for correcting or improving refractive defects by laser resection of the corneal surface. These methods include PRK, LASIK, and LASEK, which are commonly used to correct short-sightedness and hyperopia defects with or without astigmatism, and in some cases provide customized treatments to address height aberrations in the eye. [0003] The progress of laser technology and its application in the field of vision correction has made a great contribution to the technological development of laser vision correction. Ten years ago, a wide-beam laser using an iris diaphragm and / or a visor will be used to treat myopia by flattening the cen...

AI Technical Summary

Problems solved by technology

One solution is to reduce the OZ size, however, one cause of the post-LASIK spherical aberration that causes glare and halo effects in low light conditions is thought to be due to the excised OZ, which is smaller than the patient's pupil

[0006] And it is also recognized that, for example, the response of the eye to trauma as a result of LASIK keratectomy or removal of corneal tissue adds to the degree of uncertainty about the various effects of the cause of the trauma

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