Tolerance To Postoperative Refractive Error Of The Tecnis Puresee™ Iol

To evaluate the tolerance of the TECNIS PureSee™ intraocular lens (IOL) to small residual postoperative refractive errors and to assess their impact on binocular visual acuity across distances.

Department of Ophthalmology, Charité – Universitätsmedizin Berlin, Germany.

This prospective, controlled, single-center study includes 56 eyes of 28 patients undergoing routine bilateral cataract surgery with implantation of the TECNIS PureSee™ IOL. Postoperative examinations were performed at 1 and 3 months.

During follow-up, subjective refraction was assessed. Uncorrected and distance-corrected visual acuity at far, intermediate, and near distances were measured, as well as defocus curves with induction of refractive errors of +0.50 D, 0.00 D, and –0.50 D in the non-dominant eye. In addition, subjective patient perception, including optical side effects, was evaluated using the AIOLIS questionnaire.

At the time of analysis, 24 eyes of 12 patients completed the 3-month follow-up.

Under distance-corrected conditions, mean binocular visual acuity was –0.02 ± 0.08 logMAR at distance, 0.08 ± 0.06 logMAR at intermediate, and 0.25 ± 0.10 logMAR at near.

With induced +0.50 D, visual acuity was 0.00 ± 0.09 logMAR at distance, 0.09 ± 0.10 logMAR at intermediate, and 0.21 ± 0.11 logMAR at near.

With induced –0.50 D, distance visual acuity showed minimal deviation from baseline (0.01 ± 0.10 logMAR), with 0.14 ± 0.11 logMAR at intermediate and 0.30 ± 0.13 logMAR at near.

The TECNIS PureSee™ IOL demonstrates good tolerance to small residual postoperative refractive errors. Within a range of ±0.50 D, no substantial impairment of distance visual acuity was observed compared to distance-corrected baseline values, suggesting the presence of a functional tolerance window.