Abstract
Purpose To describe a method for obtaining partial-thickness keratolimbal allografts from corneoscleral buttons to be used in corneal limbal stem cell transplantation. Design Description of device design and technique for use. Methods Cyanoacrylate tissue adhesive, placed on the posterior side of a trephinated corneoscleral rim, is used to secure the allograft to a disposable acrylic sphere that is attached to a cylindrical base. Results After fixation of the corneoscleral rim to the acrylic sphere, keratolimbal allograft harvesting is performed as a continuous strip dissection with a 65 Beaver blade. This technique minimizes trauma to the epithelial stem cells, provides excellent stability of the corneoscleral rim during harvesting, and preserves the central corneal button. Conclusions This method for obtaining keratolimbal allografts effectively provides tissue stabilization during harvesting, minimizing epithelial stem cell trauma and eliminating the need for whole donor globes.
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