Corneal surface marker and marking method for reducing irregular astigmatism during lamellar (LASIK) corneal surgery

摘要

A corneal surface marker is used to improve centration and repositioning of a corneal cap or flap in lamellar corneal surgery. The marker has inner and outer concentric rings with marking radial and pararadials extending off the rings to provide adequate reference points for marking indicia to be placed on the corneal surface. The method involves preoperatively marking the corneal surface with suitable indicia in a pattern of radial and pararadial lines extending over the area of the cornea through which an incision will be made to excise a cap or flap and, after the keratotomy is performed, the cap or flap is replaced by realignment of the radial and pararadial lines with the area of the cornea surrounding the incision.