Fig. 22 A preharvested cryolathed donor cornea was used in this eye that underwent lamellar keratoplasty. Preoperatively, there was a large stromal scar secondary to a Pseudomonas ulcer, limiting visual acuity to 20/200. At 8 months postoperatively, the graft is clear, and the best-corrected visual acuity is 20/30 (A). A small tangential slit beam shows the graft-host interface (B). Haze at the graft-host interface is common, as illustrated here.