Device for separating the epithelium layer from the surface of the cornea of an eye

A device is disclosed to separate the epithelial layer of the cornea of ​​an eye. The device includes a retractor that has a rim to remove the epithelial layer as the retractor moves through the eye. The border includes a thickness thicker than the thickness of at least one epithelial cell and less thick than the thickness of the epithelial layer. The separation can be done mechanically, without the use of chemicals, so that the shape and integrity of the separated epithelial layer is preserved. The device can also be used with a polymer film that adheres to the epithelial layer to help preserve the integrity of the epithelial layer.