Visual outcomes and safety of an extended depth-of-focus intraocular lens: results of a pivotal clinical trial

Abstract

PURPOSE: To compare the effectiveness and safety of the TECNIS Symfony intraocular lens (IOL; ZXR00) with the TECNIS 1-piece monofocal IOL (ZCB00). SETTING: 15 sites in the United States. DESIGN: Prospective, randomized, patient-masked/evaluator-masked clinical trial. METHODS: Randomized participants received either the ZXR00 or ZCB00 IOL bilaterally. The 6-month postoperative outcomes included monocular and binocular distance, intermediate, and near visual acuity (VA), spherical equivalent refraction and refractive cylinder, spectacle wear, and visual symptoms. RESULTS: Overall, 299 patients were implanted with a study IOL (ZXR00 IOL, n = 148; ZCB00 IOL control, n = 151). At the 6-month follow-up, mean binocular uncorrected distance VA was comparable between ZXR00 and ZCB00 IOL recipients (P = .1011). The ZXR00 IOL group had significantly better mean binocular uncorrected intermediate VA and uncorrected near VA (both P < .0001) than the ZCB00 IOL group. The mean binocular distance-corrected intermediate VA and distance-corrected near VA were also better in the ZXR00 IOL group (both P < .0001). More ZXR00 IOL recipients reported wearing spectacles none of the time or a little of the time for overall vision at 6 months compared with the ZCB00 IOL group (85.0% vs 59.9%, P < .0001). In the ZXR00 IOL-implanted patients, low incidence rates of night glare (mild to moderate, 2.7%), halo (mild to moderate, 13.6%; severe, 2.7%), and starbursts (mild to moderate, 7.5%; severe, 1.4%) were reported. CONCLUSIONS: The TECNIS Symfony IOL provided comparable distance vision and improved uncorrected and distance-corrected intermediate and near vision, along with decreased spectacle wear and low incidence rates of dysphotopsia, compared with the TECNIS 1-piece monofocal IOL.