Fig. 3. Epithelial facet. The superficial defect between the cut edges of Bowman's membrane (arrows) is filled with epithelial cells in such a manner as to reestablish the original surface contour of the cornea. Bowman's membrane will not regenerate in this area. Because of the limited extent of the injury, the underlying collagenous tissue does not participate in the wound healing process. (Wilder reticulum stain; × 145.)