| 摘要 |
A method and device for lifting the epithelium from a selected area of the eye using an incision instrument for cutting the epithelium to define an area of the epithelium to be removed, and a fluid jet assembly for separating the selected area of the epithelium from the underlying layer. The incision instrument shown has a series of incision elements distributed about a peripheral pattern, arranged to cut the epithelium in the direction of its thickness without disturbing the underlying layer, to create a tear line. The jet assembly directs through the tear line a fluid jet in the manner that the fluid progresses inwardly from the tear line and effectively wedges the epithelium from the underlying layer. The device shown also has an epithelium support structure for engaging the exterior surface of the delineated area of the epithelium in order to support and maintain the structural integrity of the lifted epithelium. The lifted epithelium can be biologically preserved and repositioned after a medical procedure is conducted on the exposed surface of the eye. Isotonic fluids for maintaining the biological balance of the eye tissue and use of softening agents for aiding in the release of scarred or tenaciously held epithelium are also disclosed. |
