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Surgeon reports first experience implanting AC multifocal IOL in pseudophakic presbyopes
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NEW ORLEANS — The first reported use of an anterior chamber multifocal IOL to correct pseudophakic presbyopia was reported here during Refractive Surgery Subspecialty Day, preceding the American Academy of Ophthalmology annual meeting.
Lee T. Nordan, MD, described two cases in which pseudophakic presbyopes were implanted with the Vision Membrane diffractive multifocal lens (Vision Membrane Technologies) in their pseudophakic eye. He said the Vision Membrane IOL, which is 600 µm thick, has demonstrated good placement and visual results in 50 phakic eyes, but that they had not previously been implanted in pseudophakic patients.
Both surgeries were performed by David Castillejos, MD. The first patient, an 82-year-old woman who had undergone uncomplicated phacoemulsification and posterior chamber IOL implantation 9 months prior, achieved 20/25 best corrected visual acuity for near and distance.
"What is remarkable was her depth of field," Dr. Nordan said. "What is interesting is this patient could read at 14 inches, 18 inches and 20 inches at 20/25 because of her depth of field."
He said both patients experienced minimal glare and halos, but did report seeing "an intermittent fine line, like the edge of a bubble."
The results of these two cases point to an exciting prospect for the future, Dr. Nordan said.
"We now have the ability to take any patient, phakic or pseudophakic, and correct distance vision and near vision with a high-quality image that does not change based on pupil size," Dr. Nordan said. "I believe that, by using new technology, we have a better mousetrap in terms of better optics. How we will use it in the future, I don't know — we are working on it. But the ability to use a diffractive multifocal lens for distance and near high quality vision is definitely upon us."