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LASER EYE SURGERY SYSTEM USING WAVEFRONT SENSOR ANALYSIS TO CONTROL DIGITAL MICROMIRROR DEVICE (DMD) MIRROR PATTERNS
LASER EYE SURGERY SYSTEM USING WAVEFRONT SENSOR ANALYSIS TO CONTROL DIGITAL MICROMIRROR DEVICE (DMD) MIRROR PATTERNS
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机译:基于波前传感器分析的激光眼科手术系统控制数字微镜器件(DMD)镜面模式
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摘要
A system (10) and method for performing corneal ablation or reshaping with a laser (22) in order to correct aberrations in the optical system of the eye (40) utilizes a wavefront sensor which defines a wavefront correction for the eye (40) and then, based upon that defined wavefront correction, drives a digital micromirror device (DMD) which modulates a laser beam to the eye (40) to perform the correction. As the DMD (26) is a 2-D array of individually controlled mirrors, and the wavefront sensor analysis can provide a sequence of two dimensional arrays of values which together define the wavefront correction for the eye (40), the combination of the two produces a method for correcting the corneal surface. The system (10) may be operated in either of two manners to achieve optimum refractive corrections: (1) off-line measurement of the eye optical system via the wavefront sensor followed by DMD-based laser refractive surgery, or (2) realtime measurement of the eye optical system via the wavefront sensor which directs a DMD-based laser refractive surgery system.
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