Bilateral implantation of the Tecnis Synergy IOL showed “very good” performance at all distances at 3 months of follow-up.
Ramin Khoramnia, MD, and co-authors presented a poster at the American Academy of Ophthalmology meeting about their study, which is now ongoing at the University of Heidelberg in Germany.
The study includes 28 patients who had refractive lens exchange with bilateral Tecnis Synergy (Johnson & Johnson Vision) IOL implantation. Synergy is a diffractive continuous range of vision IOL that combines bifocal and extended depth of focus technologies.
TECNIS Synergy™ IOL creates a new standard in presbyopia-correcting intraocular lens (PC-IOL) technology, allowing cataract patients to experience continuous high-contrast vision from far through near, even in low-light conditions.
It also eliminates the visual gaps present in trifocal and other multifocal technology, offering patients the freedom to focus within the range. Synergy IOL’s violet-filtering technology demonstrates reduction in halo intensity for tasks like night driving.
In the study, patients had their vision tested at all distances, as well as their defocus curves and contrast sensitivity measured in mesopic and photopic situations.
Additionally, all eyes were tested preoperatively and postoperatively using the Salzburg Reading Desk at subjectively desired and set near (40 cm) and intermediate (80 cm) distances.
Uncorrected and distance corrected visual acuity testing at far, intermediate, and close distances yielded "very good" results.
Uncorrected and distance corrected visual acuity testing at far, intermediate, and close distances yielded "very good" results. The mean uncorrected binocular logMAR acuity was –0.05 at a distance, –0.07 at an intermediate distance, and 0.00 at a close distance. Defocus curve testing supported these findings, revealing visual acuity of 0.1 logMAR or greater from +0.75 D to –3 D.
Reading acuity measured with the Salzburg Reading Desk was also very good.
“Patients preferred a nearer distance, but reading performance was comparable for the subjectively preferred and set distances,” the authors wrote.
Photopic and mesopic contrast sensitivities were within the normal range, and photic phenomena were comparable to those reported for diffractive trifocal IOLs, “as expected for diffractive lens designs,” the authors added.