Early Clinical Results of a Newly Developed Continuous Range of Vision Intraocular Lens.

INTRODUCTION

A newly developed diffractive continuous range of vision (CRV) intraocular lens (IOL) (TECNIS Odyssey) was introduced to reduce photic phenomena compared to the previous model (Synergy). This brief report is the first to evaluate the early postoperative outcomes of the new CRV IOL in a Japanese population.

METHODS

This retrospective review included 50 eyes of 25 patients with cataracts who underwent bilateral implantation of modified CRV IOLs (models DNR00V and DRT150-375, TECNIS Odyssey). Clinical records of the patients were obtained. One month postoperative assessments included monocular and binocular uncorrected visual acuity (UCVA) and distance-corrected visual acuity (DCVA) at 5 m, 60 cm, and 40 cm. Additionally, binocular photopic contrast sensitivity, defocus curve, spectacle independence, incidence of photic phenomena, and overall patient satisfaction were evaluated.

RESULTS

The mean patient age was 65.2 ± 8.4 years, with a mean IOL power of 17.4 ± 4.7 D. Postoperative binocular UCVA/DCVA (logMAR) at 5 m, 60 cm, and 40 cm was - 0.18 ± 0.06/ - 0.21 ± 0.06, - 0.01 ± 0.08/ - 0.01 ± 0.08, and 0.00 ± 0.08/0.00 ± 0.07, respectively. Contrast sensitivity remained within normal limits at all spatial frequencies. The binocular defocus curve showed DCVA of 0.0 logMAR or better across a range from + 0.5 to - 2.0 D. Spectacle independence was achieved in 64% of patients, whereas the remainder required reading glasses. Reports of glare and starburst were minimal (84% and 76% of patients reported none or minimal, respectively), whereas 52% experienced moderate to severe halos. Overall, 96% of the patients were satisfied or very satisfied with their distance and intermediate vision, and 68% were satisfied with their near vision.

CONCLUSIONS

The new diffractive CRV IOL offers simultaneous vision across a broad range, with improved tolerance to photic phenomena, while maintaining comparable visual acuity at far, intermediate, and near distances compared to the previous model.