| 摘要 |
<p>The invention provides improved devices, systems, and methods for removing the epithelial layer of a patient's cornea, particularly in preparation for laser resculpting of the cornea. The invention makes use of an epithelial removal tool (30) which is integrated into a laser eye surgery system (20). Structurally supporting (32) the epithelial removal tool (30) relative to the optical train (26) allows precise control over the positioning of the tool relative to the cornea. The force and/or duration of epithelial abrasion can be controlled to avoid removal of excess corneal tissues. The accurate alignment of the removal tool allows the total area of epithelium removal to be minimized while ensuring that adequate access is provided for resculpting. An orbital or concentric movement of the abrasion surface may provide a more even abrasion.</p> |
