METHOD PATTERNS FOR INTRASTROMAL REFRACTIVE SURGERY

摘要

Described is a laser unit for performing intrastromal ophthalmic laser surgery comprising means for generating a pulsed laser beam, means for directing and focusing the beam onto a series of focal spots in the stroma for Laser Induced Optical Breakdown (LIOB) of stromal tissue at each focal spot and means for moving the focal spot in the stroma to create a pattern of radial cuts. The radial cuts can be made coplanar with the visual axis and are located in the stroma within less than approximately 0.9T from an anterior surface of the eye, and the anterior end of each radial cut is located in the stroma more than eight microns in a posterior direction from Bowman's capsule and have a thickness of approximately two microns.