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New design of implantable lens may eliminate pupillary block
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CHICAGO — A Visian implantable Collamer lens with the addition of a hole in the center demonstrated similar results as its predecessor without the need for iridotomy, a presenter here reported.
The upgraded ICL V4c (STAAR Surgical) with a 360-µm hole allows aqueous humor to flow from the posterior chamber to the anterior chamber. According to a study presented by Jaime Aramberri, MD, at the American Society of Cataract and Refractive Surgery meeting, its main advantage is preventing occurrence of pupillary block.
“There is no need for iridotomy, which is time-saving, and no related visual symptoms,” he said.
The prospective, nonrandomized, non-controlled, observational study included 25 eyes of 14 patients implanted with the ICL V4c by a single surgeon. Promising 3-month outcomes were shown, and no adverse events occurred.
According to Dr. Aramberri, while 28% of patients maintained preoperative visual acuity, the rest gained at least half a line and up to three lines of vision.
“Efficacy, safety, vault and intraocular pressure were all similar,” he added, comparing the new ICL with its predecessor without a hole.
Between July 2011 and April 2012, Dr. Aramberri and colleagues implanted 400 of the new lenses, and they are currently analyzing data for a multicenter trial.
- Disclosure: Dr. Aramberri’s travel expenses were funded by STAAR Surgical.