CLINICAL EVALUATION OF READING PERFORMANCE WITH A DIFFRACTIVE CONTINUOUS-RANGE-OF-VISION INTRAOCULAR LENS USING AN ELECTRONIC READING DESK

Evaluation of the near and intermediate reading performance with a novel presbyopia correcting IOL combining bifocal and extended depth of focus technologies using an electronic reading desk.

This prospective, interventional clinical study was conducted at a university eye clinic in Germany.

In this study 56 eyes of 28 patients who undergo refractive lens exchange procedure and bilateral implantation of the TECNIS Synergy IOL (Johnson & Johnson, New Brunswick, NJ) were included.

Uncorrected and distance corrected reading acuity, reading distance, reading speed, and the smallest print size that can be read effectively at a set (40 cm/80 cm) and subjectively chosen near and intermediate distance were assessed using the Salzburg reading desk. All patients were examined preoperatively and 6 months after refractive lens exchange surgery. 

Uncorrected near reading acuity increased from 0.61 ± 0.16 logMAR preoperatively to 0.05 ± 0.09 logMAR postoperatively at the set near distance (40 cm) and from 0.60 ± 0.11 logMAR to 0.07 ± 0.08 logMAR at the subjectively preferred distance (39.6 ± 5.3 cm and 37.7 ± 4.3 cm). Uncorrected intermediate reading acuity was 0.39 ± 0.19 logMAR preoperatively and 0.08 ± 0.07 logMAR postoperatively at the set intermediate distance (80 cm) and 0.43 ± 0.21 logMAR preoperatively and 0.07 ± 0.08 logMAR postoperatively at the preferred intermediate distance (73.5 ± 9.5 cm and 73.3 ± 5.9 cm). 

Uncorrected intermediate and near reading function considerably improved after bilateral implantation of the TECNIS Synergy IOL. Patients preferred a closer near and intermediate distance to the set distances. Reading function was comparable for the set and subjectively preferred distances, however.