Multifocal Contact Lens Trial for Nonrefractive Hydrogel Corneal Inlay as Predictor of Visual Outcomes
The purpose of this study is to compare the preoperative multifocal contact lens trial (MFCL) trial scores to the 1 year postoperative outcomes.
During enrollment for the U.S. study, candidates for the Raindrop Near Vision Inlay were placed on a near center multifocal contact lens trial for five days (Purevision, Bausch & Lomb). At the end of the trial, the subjects who liked their vision were enrolled in the study, but also Uncorrected Near Visual Acuity (UNVA) was tested to predict near benefit after implantation. One year after surgery, visual acuity (uncorrected and best-distance corrected), quality of life and patients satisfaction were evaluated.
Three-hundred twenty-four patients received a MFCL trial before Raindrop surgery. Average UNVA with the MFCL was (20/28); 88 % of eyes achieved 20/25 or better monocular UNVA. One year after surgery, actual UNVA (average) was 20/20.7, and 95% could see 20/25 or better. When correlating preop near to postop scores, we found that Raindrop Inlays provide better visual outcomes when compared to MFCL.
The Raindrop Inlay provides better near visual outcomes than the MFCL, possibly due to it’s mechanism of action, as it changes the shape of the cornea to create a smooth gradient of power without sharp transitions, like MFCL.