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Topography-guided ablation can treat central steep island
ROME — Specially designed software used in conjunction with the WaveLight Allegretto excimer laser successfully treated a steep central island, said Hans Peter Iseli, MD. He presented his results with this case here at the winter meeting of the European Society of Cataract and Refractive Surgeons.
Dr. Iseli told attendees about a “very unhappy patient” who had undergone LASIK 1 year earlier and who now had a best corrected visual acuity of 20/40. Corneal topography showed the formation of a central steep island, Dr. Iseli said.
Dr. Iseli said that software he developed allowed him to create a Zernike fit of 3.5 mm inside an optical zone of 7 mm. Ablation was performed inside the 3.5 mm area using the Allegretto laser, and the central steep island was eliminated, he said.
Dr. Iseli reported that BCVA the day following treatment was 20/16, and postop topography measurements showed that “the central island had almost disappeared,” he said.