Visual Outcomes After Bilateral Implantation of a Trifocal Intraocular Lens Pairing Two Complementary Optic Light Distributions.

PURPOSE: To assess visual, refractive, and optical outcomes and patient-reported satisfaction following bilateral implantation of two trifocal intraocular lenses (IOLs) sharing the same optical architecture but differing in their photopic light distribution: Vivinex Gemetric and Vivinex Gemetric Plus (HOYA Surgical Optics).

METHODS

This was an observational, prospective, consecutive, non-comparative case series. Fifty-four eyes of 27 patients underwent bilateral cataract surgery or refractive lens exchange. Each patient received the Gemetric IOL in the dominant eye and the Gemetric Plus in the non-dominant eye. Examinations included full refractive and visual assessment, defocus curves, mesopic contrast sensitivity, pyramidal aberrometry, and validated patient-reported outcome measures (Quality of Vision Questionnaire and Near Activity Visual Questionnaire), with follow-up at 1 day and 1, 3, and 6 months.

RESULTS

The paired IOL combination provided a visual acuity of 0.15 logarithm of the minimum angle of resolution (logMAR) or better between defocus levels of +0.50 to -3.00 diopters (D). Maximum mean value of visual acuity was obtained at 0.00 D (-0.07 ± 0.05 logMAR) and a second peak was found at -3.00 D (0.07 ± 0.09 logMAR). It was 0.13 ± 0.10 logMAR at a defocus level of -1.50 D. Monocular corrected near visual acuity was significantly better for the Gemetric Plus IOL (P = .03). Better monocular distance visual function was obtained with the Gemetric IOL (P = .05). Contrast sensitivity remained within or above age-matched normative values. Ocular aberrations remained low and stable, with no significant differences between lens types. Ninety-six percent of patients reported no or minor difficulties in conducting prolonged near work.

CONCLUSIONS

The pairing strategy of the Vivinex Gemetric and Gemetric Plus trifocal IOLs delivers excellent visual acuity across all distances, preserves contrast sensitivity, and maintains a high level of optical quality and patient satisfaction.