Real-World Visual and Refractive Results of Two Different Presbyopia Correcting Intraocular Lenses

Abstract

Background/Objectives: To investigate visual acuity, refractive outcomes and the pre dictive accuracy of modern intraocular lens (IOL) power calculation formulas in eyes implanted with two presbyopia-correcting IOLs: trifocal Zeiss AT LISA TRI and the non diffractive EDOF Teleon Comfort. Methods: This retrospective consecutive chart review included 115 patients who underwent uncomplicated bilateral cataract surgery and re ceived either the LISA TRI (n = 56) or Comfort (n = 59). Biometric measurements were obtained preoperatively, and refractive outcomes were assessed 1, 3, and 6 months postop eratively. Postoperative spherical equivalent (SEQ) was compared to predicted SEQ using the ESCRS calculator and IOLCON platform. Outcome measures included mean prediction error and mean absolute error (MAE). Distance-corrected visual acuity (VA), uncorrected VA, defocus curves, preferred viewing distances, contrast sensitivity, and photopic reading speed were also analyzed. Results: All formulas performed better in the LISA TRI group, with significantly lower MAE and higher proportions of eyes within ±0.50 diopters (D). Systematic prediction error offsets were observed for three formulas (K6, Castrop, Hoffer QST) in the LISA TRI group and for all five formulas in the MF15 group. Refractive stability was achieved by 3 months for the LISA TRI, while 20% of Comfort eyes continued to show SEQ shifts > 0.50 D at 3 months. Defocus equivalent (DEQ) had lower proportions of eyes within ±0.50 D than SEQ. Conclusions: The LISA TRI demonstrated superior predictive accuracy, faster refractive stabilization, and stronger near performance than the Comfort. These findings support the importance of IOL-specific constant optimization and highlight the need for incorporating DEQ into routine refractive outcome evaluation.