一种用于激光屈光术的新型激光光斑调制系统

激光光调调制装置包括－高分辨率的微镜阵列,后者由许多独立编址并且可移动的微镜构成。微镜在打开位置反射部分光束到角膜,在关闭位置反射光束偏离角膜。针对一系列的预定模式进行编程后,计算机可控制某些微镜移动到打开位置,而其它的微镜处于关闭位置。每个消融模式叠加起来构成矫正角膜折射率偏差的形成。并且由于微镜阵列的高分辨率,此形线非常平滑,这对减轻激光屈光术后的角膜浑浊程度是有利的。

Introduction of a new beam modulating system for the laser refractive surgerg

The laser beam modulating apparatus includes a high-resolution micromirror array having individually addressable and movable mirrors. The mirrors nan be movable between an "on" position for reflecting a portion of beam onto a cornea, and an "off" psition for reflecting the beam away from the cornea. The computer is programmed to move the mirrors to the 'on" position in a series of predetermined patterns, and the remaining mirrors to the "off" position. Each ablated pattern is overlaid on each other to produce a contour change in the cornea and correct a refractive error thereof. Moreover, the contour is very smooth because of the high resolution of the micromirror array, which may help to reduce the degree of the corneal haze after the laser refractive surgery.