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New three-focal lens provides true multifocality, no compromise on intermediate vision
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 Damien Gatinel |
PARIS — A new three-focal diffractive IOL model provides full range multifocality with no compromise on intermediate vision, a speaker said here.
"Using an original combination of two elementary diffractive profiles, the Fine Vision lens (Physiol) is able to provide a continuous performance from distance to near, as shown by the defocus curve. Optical bench evaluations confirmed the presence of a peak of light energy at the intermediate distance foci," Damien Gatinel, MD, said at the meeting of the European Society of Cataract and Refractive Surgeons.
The lens is made of a hydrophilic material. It is aspherical and compatible with a 1.8 mm incision size. The diffractive profile of this lens was smoothed to reduce the risk of unwanted diffractive effects and to enhance distance vision in mesopic conditions.
"Further clinical validation is necessary, but our preliminary results in 22 eyes show a very high performance at all distances, including intermediate, which had been, so far, the weak point of multifocal lenses," Dr. Gatinel said.