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Collamer lens implantation shows efficacy for managing hyperopia after RK, study suggests

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Using an implantable Collamer lens may be an effective surgical alternative for managing hyperopia after radial keratotomy, according to a small, retrospective chart review by researchers in Canada. "However, a large cohort and longer follow-up are needed to determine the long-term efficacy and safety of this procedure in this clinical setting," the authors said.

Sathish Srinivasan, FRCSEd, FRCOphth, and colleagues at Herzig Eye Institute and the University of Toronto implanted the Visian ICL (STAAR Surgical) in four eyes of three patients with secondary hyperopic shift after uneventful myopic radial keratotomy.

After an average follow-up of 5.5 months, the mean uncorrected visual acuity had improved from 20/130 at baseline to 20/24 postoperatively, and the mean spherical equivalent had decreased from 5.31 D at baseline to 0.08 D postoperatively, according to the study.

At 1 month, all eyes had UCVA better than or equal to preoperative best corrected visual acuities, the authors noted.

"Two eyes were within 0.25 D and all were within 0.5 D of the predicted refractive target," they added.

The study is published in the April issue of Cornea.