Eccentric semilunar penetrating keratoplasty for peripheral corneal perforation following chemical eye injury: A case report

Figure 1 Slit-lamp examination. A: Slit-lamp examination of the left eye at presentation demonstrating conjunctival hyperemia, corneal melting and perforation in the inferior quadrant, flat anterior chamber with iris incarceration, and oval pupil displacement toward the perforation site; B: Slit-lamp examination of the left eye at 10-month follow-up showing the inferiorly positioned semilunar graft with maintained central corneal clarity and peripheral neovascularization at the host-graft junction.

Figure 2 Anterior segment optical coherence tomography global scan at 10-month follow-up demonstrating graft integrity with well-apposed host-graft interface and maintained anterior chamber depth, alongside corneal topography map revealing irregular astigmatism induced by the semilunar graft.