Clinical performance after implantation of the Symfony extended depth of focus intraocular lens in the dominant eye and the Synergy presbyopia correcting intraocular lens in the non-dominant eye.

Abstract

To evaluate subjective and objective outcomes after combined implantation of an extended depth of focus (EDOF) intraocular lens (IOL) and a combined technology multifocal lens (CT-IOL). Two clinical practices in the USA. Prospective, unmasked, multi-center, non-randomized bilateral eye study. Patients interested in reducing their dependence on spectacles were implanted with an EDOF IOL in the dominant eye and a CT-IOL in the non-dominant eye. Refractive and visual acuity data at various distances (4 m, 66 cm, 40 cm, 33 cm) were collected 3 months post-surgery, along with the distance-corrected binocular defocus curve and responses to questionnaires related to spectacle independence, visual disturbances, and overall visual function. Data from 37 subjects were analyzed. The distance corrected binocular defocus curve showed a mean VA better than 0.1 logMAR (20/25) at all vergences from +1.00 D to -2.50 D. Thirty-six subjects (97%) had an uncorrected binocular VA of 0.3 logMAR or better, at all test distances. Seventy percent of subjects (26/37) reported never wearing glasses at any distance and 84% (31/37) were "completely" or "mostly" satisfied with their overall vision after surgery. Halos were the disturbance reported most frequently, and reported as most bothersome, with difficulty driving at night the most common visual function issue. Difficulty reading was the next most reported issue. Overall eyesight was rated as "excellent" or "good" by 92% (34/37) of subjects. This combined EDOF/CT-IOL approach was well tolerated by subjects and provided some potential benefits relative to bilateral implantation of either lens.