Functional Outcomes After Bilateral Refractive Lens Exchange With A Continuous-Range-Of-Vision Iol

Clinical evaluation of a diffractive continuous-range-of-vision IOL, that combines bifocal and extended depth of focus technologies, regarding visual performance at different distances, contrast sensitivity under different lighting conditions and defocus curve in refractive lens exchange patients. 

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

Bilteral implantation of the TECNIS Synergy IOL (Johnson & Johnson, New Brunswick, NJ) is performed in 56 eyes of 28 patients during a refractive lens exchange procedure. At 3 months postoperatively, uncorrected (UDVA) and corrected (CDVA) distance visual acuity, uncorrected (UIVA) and distance corrected intermediate (DCIVA) visual acuity at 80 cm distance, uncorrected (UNVA) and distance corrected (DCNVA) near visual acuity at 40 cm distance are assessed. Defocus curve testing with distance correction and contrast sensitivity testing under photopic and mesopic conditions were also performed. 

Binocular UDVA and CDVA were -0.06 ± 0.06 and -0.12 ± 0.05 logMAR. UIVA and DCIVA were -0.07 ± 0.05 and -0.08 ± 0.05 logMAR, UNVA and DCNVA were 0.00 ± 0.06 and -0.04 ± 0.07 logMAR. The defocus curve revealed a visual acuity of 0.20 logMAR or better from +0.75 to -3.5 diopters. Photopic contrast sensitivity at spatial frequencies 3.0, 6.0, 12.0 and 18.0 was 1.66 ± 0.18, 1.75 ± 0.17, 1.41 ± 0.18 and 1.02 ± 0.18 log units. Mesopic contrast sensitivity at the same frequencies was 1.51 ± 0.19, 1.39 ± 0.22, 0.80 ± 0.34 and 0.36 ± 0.31. 

 

The TECNIS Synergy IOL provided very good distance, intermediate and near visual outcomes. A visual acuity of 0.20 logMAR or better was achieved from +0.75 to -3.5 diopters. Contrast sensitivity was within the normal range.