Ophthalmic surgical instrument and method

摘要

PCT No. PCT/US93/10797 Sec. 371 Date Nov. 15, 1995 Sec. 102(e) Date Nov. 15, 1995 PCT Filed Nov. 8, 1993 PCT Pub. No. WO94/10918 PCT Pub. Date May 26, 1994A corneal surgical instrument comprising a surgical knife and ultrasonic probe assembly (12) that measures the corneal thickness, monitors the positioning and perpendicularity of the knife (37) and controls the depth of the knife blade (37). The ultrasonic probe assembly (15) includes a pair of ultrasonic probes (47) disposed on opposite sides of the knife blade (37). Information on monitored parameters is displayed to the surgeon.