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Multifocal IOL preserves contrast sensitivity, full range of vision
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 Joaquim N. Murta |
CHICAGO — A novel multifocal IOL offers adequate contrast sensitivity and optical stability, a surgeon said here.
During Refractive Subspecialty Day preceding the joint meeting of the American Academy of Ophthalmology and Middle East Africa Council of Ophthalmology, Joaquim N. Murta,MD, PhD, presented results of an early evaluation of the LENTIS Mplus multifocal IOL (Oculentis).
"The Mplus was stable and well-centered in the capsular bag ... and provided excellent uncorrected distance visual acuity as well as very good near visual acuity," Dr. Murta said.
The lens is pupil-dependent and offers 3 D of addition with minimal loss of light and reduced light sensations. The lens is made of an acrylic, ultraviolet light-absorbing material, and features a 360° continuous square and haptic edge.
The implant's unique refractive design incorporates an aspheric, asymetric distance vision zone and sector-shaped near vision zone. Most conventional multifocal IOLs are rotationally symmetric and rely on diffraction, refraction, or both, Dr. Murta said. Dr. Murta and colleagues used a unique psychophysical assessment method adopted form the Metropsis vision testing suite (Cambridge Research Systems) to evaluate contrast sensitivity. They used the Cambridge Color Test to gauge color vision.
Results of the evaluation showed that the Mplus optimized contrast sensitivity in mesopic and photopic conditions, and simultaneously minimized light interference, Dr. Murta said.