Enhanced Surgical Safety through Protective Penetrating Keratoplasty: A Retrospective Analysis of 22 Cases

Figure 2

Sketches of the protective penetrating keratoplasty procedure. (a) The cornea was marked with a 7.5-mm manual trephine, and the corneal epithelium was removed. (b) Nonpenetrating incisions in four quadrants and lamellar stromal dissection were performed in up to 80% of the recipient’s stroma. (c) The donor corneal tissue was placed and secured to the recipient’s bed. (d) Continuous anterior chamber penetrating incisions (1/4 circumference each) were made. A suture was placed in the middle of each 1/4 to secure the donor cornea in the incised sector. (e) The remaining recipient corneal tissue was extracted from the unsutured quadrant. (f) Complete interrupted corneal suturing was performed.

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