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. 2023 Jan 12;9(2):e1434. doi: 10.1097/TXD.0000000000001434

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Copyright © 2023 The Author(s). Transplantation Direct. Published by Wolters Kluwer Health, Inc.

This is an open-access article distributed under the terms of the Creative Commons Attribution-Non Commercial-No Derivatives License 4.0 (CCBY-NC-ND), where it is permissible to download and share the work provided it is properly cited. The work cannot be changed in any way or used commercially without permission from the journal.

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FIGURE 2. — Cross sections and photos of corneal transplant procedures. Transplanted tissue is colored, and the recipient eye is grayed out in schematics. A, PKP replaces the entire corneal thickness, with a photo several months after transplant with several sutures removed. B, ALK replaces the anterior stroma, Bowman’s membrane, and epithelium. Photograph shows an intact graft with all sutures removed several months after transplant. C, DALK replaces the entire stroma, Bowman’s membrane, and epithelium while leaving Descemet’s membrane intact. Photograph shows an intact graft several months after transplant with selected sutures removed to correct astigmatism. D, DSEK replaces Descemet’s membrane and endothelium, supported by a thin layer of donor stroma. E, DMEK replaces Descemet’s membrane and endothelium without any donor stroma. An air bubble is used to flatten the graft onto the cornea, and an “S” is used to orient the graft. F, Keratoprosthesis replaces the entire corneal thickness, with artificial optical surfaces displayed in red on the schematic. ALK, anterior lamellar keratoplasty; DALK, deep anterior lamellar keratoplasty; DMEK, Descemet membrane endothelial keratoplasty; DSEK, Descemet stripping endothelial keratoplasty; PKP, penetrating keratoplasty.