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Pinhole effect shows good early results in IC-8 IOL
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MILAN — Preliminary results of a post-market trial with the AcuFocus IC-8 small aperture IOL in Europe show that the lens improves near and intermediate vision, while maintaining good distance vision.
“The concept comes from the Kamra inlay, which has proved that the pinhole effect is an easy, successful way of addressing presbyopia without competing focal points that degrade image quality and contrast sensitivity,” Matteo Piovella, MD, said at the annual joint meeting of Ocular Surgery News and the Italian Society of Ophthalmology.
Matteo Piovella
The lens is a single-piece hydrophobic acrylic incorporating a mask of polyvinylidene fluoride and nano-particles of carbon with 3,200 micro-perforations to allow permeability and nutrient flow.
In the study, patients are implanted monocularly in the nondominant eye, targeting between -0.5 D and 0.75 D, while a monofocal lens is implanted in the contralateral dominant eye, targeting plano.
“Binocular results in my first two eyes show distant and intermediate vision close to 20/20 and Jaeger 5 for near at 1 week,” Piovella said.
A previous study carried out in the Philippines showed improved range of vision of a mean J1 at near and 20/20 at both intermediate and distance at 12 months.
Four technicians were asked to assess the ease of performing diagnostic assessments through the lens, including visual field, fundus photography and retinal OCT. They reported that evaluation could be carried out without impediments or additional time, Piovella said.
“Size of incision is something that still needs to be addressed, since the current inserter requires an incision of 3.2 mm,” he said. - by Michela Cimberle
Disclosure: Piovella reports he is a consultant to AcuFocus.