Continued experience with PresbyLens supports efficacy for presbyopia correction

LONDON — Ongoing experience with the PresbyLens intracorneal implant supports the efficacy of the lens technology for correcting presbyopia, according to a surgeon speaking here.

The PresbyLens, in development by ReVision Optics, is an intracorneal implant intended to provide a central near add zone and a paracentral intermediate zone, allowing the remaining cornea to be used for distance vision. The lens is placed in a patient's nondominant eye in conjunction with myopic LASIK targeted for bilateral plano vision.

Stephen Slade, MD, presented information on the implant at the European Society of Cataract and Refractive Surgeons meeting on behalf of Jon Dishler, MD. Dr. Dishler had evaluated the lens in 15 patients who underwent LASIK performed with a Nidek excimer laser and Nidek microkeratome.

"All patients achieved an uncorrected distance vision of 20/32 or better and an uncorrected near vision of 20/40 or better," Dr. Slade said. "All of them are spectacle free for distance and near vision, and the majority for intermediate vision. None of the patients lost more than two lines of BCVA."

Dr. Slade said he has obtained comparable results in his own series of 18 patients, with LASIK flaps created using the IntraLase femtosecond laser (IntraLase Corp.) or the Hansatome microkeratome (Bausch & Lomb).

"This technology is similar to monovision, a balance between how much you lose at distance compared to how much you gain at near. But while the true monovision is about one to one, with this technique you gain more lines at near than you lose at distance," he said.