PMC4327547_01
RE. Note the Fyodorov-Zuev keratoprosthesis and corneal pannus.
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F1
An examination of the RE (fig. 1) revealed a corneal pannus and a central keratoprosthesis with an Ahmed implant behind it.
Flash VEP prior to surgery. The top graph represents both eyes, the middle graph the RE, and the bottom graph a VEP of the LE.
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F2
VEP recorded from binocular stimulation resembled the LE VEP wave forms, but consisted of higher amplitudes in keeping with some RE contribution (fig. 2).
Vitreal opacities hiding a normal looking retina, as seen during surgery. Notice the pale disc with an increased C/D ratio (arrow).
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F3
During surgery, the retina appeared normal while the optic disc appeared pale with a high cup-to-disc ratio (fig. 3).