Method and apparatus for modifying corneal buttons

摘要

Apparatus for altering the refraction of corneal tissue including a perforated die to deform the corneal tissue in a predetermined manner so that a cut in a transverse plane achieves the desired alteration. The corneal tissue is held firmly to the die both by suction and mechanical pressure. The method of so treating corneal tissue by deforming it to obtain a desired refraction with a planar cut including a method of holding the tissue in the deformed state by means of suction and mechanical pressure.