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Miyake-Apple view, accelerated aging used to assess performance and quality of novel three-piece IOL
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MILAN — A novel three-piece IOL for a small incision is easy to implant, stable in the eye and glistening-free, according to one surgeon.
The Kowa PU6A IOL is preloaded in an injector and currently requires a 2.8-mm incision. A new injector for a smaller incision size is in development, Gerd Auffarth, MD, PhD, said at the annual joint meeting of Ocular Surgery News and the Italian Society of Ophthalmology.
Gerd Auffarth
Miyake-Apple posterior video analysis showed that the lens unfolds easily and smoothly in the eye.
“The lens has fairly long haptics which provide a large arc of contact in the bag, optimizing stability. They are made of polyvinylidene fluoride, a soft and flexible material that minimizes the risk of damage or deformation of the capsular bag during implantation,” Auffarth said.
The optic is made of hydrophobic acrylic material, but the highly cross-linked polymer used prevents glistening formation. In a study, the IOL was submitted to an accelerated aging process to assess glistening formation.
“Lenses are immersed in saline and stored at 45°C for 24 hours. The temperature is then reduced to 37°C by immersion in water. After 2.5 hours, the samples are analyzed using a dedicated software,” Auffarth explained.
A low number of microvacuoles, fewer than five per square millimeter, was found. In the Miyata grading system, this corresponds to a glistening grade of 0. - by Michela Cimberle
Disclosure: Auffarth reports he receives research grants from Kowa.