PMC4943773_01
Perioperative findings. At referral, a corneal perforation plugged by iris superotemporally (a, b; arrows) and a flat anterior chamber in the left eye are seen on slit-lamp examination (a) and ultrasound biomicroscopy (b). Slit-lamp examination (c) and AS-OCT (d) show that 5 days after corneal grafting, the donor corneal tissue (d; *) completely covers the corneal defect (c, d; arrows) on the host cornea (d, f; #). Seven weeks postoperatively, slit-lamp examination (e) shows peripheral movement of the anterior edge of the patch graft and exposure of the previously perforated area (arrow). An AS-OCT (f) image shows that stromal scar tissue (arrow) covered by corneal epithelium has closed the corneal defect.
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F1
Slit-lamp examination and ultrasound biomicroscopy showed a corneal perforation about 1 mm in diameter superotemporally, iris plugging, and flat anterior chamber (AC) OS (fig. 1a, b); fibrin formation and floating cells were in the AC, but endophthalmitis or an infectious corneal ulcer was not identified. AC was reformed and the perforation was masked by the donor cornea (fig. 1c). Anterior-segment optical coherence tomography (AS-OCT) images showed a corneal defect under the donor cornea (fig. 1d). Seven weeks postoperatively, further displacement of the donor cornea resulted in unmasking of the perforated area (fig. 1e). At this time, the corneal defect was closed by stromal scar tissue and corneal epithelium (fig. 1f); corneal topographic maps obtained by a rotating Scheimpflug camera (Pentacam; Oculus, Wetzlar, Germany) showed no marked astigmatism (fig. 2).