Determining the accuracy of an eye-tracking system for laser refractive surgery

摘要

The accuracy of an eye tracking system designed for laser refractive surgery is determined. An enucleated porcine eye is attached to a scanning device and the movement measured using the eye tracking system. The recorded position is compared to the preprogrammed position of the scanning device. The system demonstrated an accuracy of 0.06mm for an intact cornea and 0.1mm for a cornea with a thin flap removed. The average decentration in laser refractive surgery is 0.4mm, so the implementation of this eye tracker would lead to improved alignment between the laser and eye during laser refractive surgery.