New lens combining refractive and diffractive designs shows promise

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Preliminary clinical outcomes indicate that the OptiVis multifocal IOL is a promising new concept, combining the benefits of both diffractive bifocal and progressive refractive designs, according to one surgeon."The center of the lens, within 1.5 mm of diameter, has a progressive refractive design for distance and intermediate vision. The intermediate ring, within 1.5 mm and 3.8 mm, has an apodized diffractive bifocal design for distance and near that reduces halos. The peripheral ring has a prolate, aspheric design to improve image contrast at distance," Matteo Piovella, MD, said at the winter meeting of the European Society of Cataract and Refractive Surgeons.The OptiVis IOL (Aaren Scientific) was implanted in 67 eyes of 39 patients through a 2.8- to 3-mm incision. Twenty-eight implants were bilateral
Through-focus response curves for OptiVis from optical bench testing showed broad distance focus and greater depth of focus in the intermediate range compared with other multifocal IOLs and sharp near focus, similar to simple diffractive bifocal IOLs.