Comparison of the Clinical Outcomes between Echelette Extended Range of Vision and Diffractive Bifocal Intraocular Lenses

Abstract

Purpose To compare the clinical outcomes of echelette extended range of vision (ERV) and diffractive bifocal intraocular lenses (IOLs). Methods This is a prospective, consecutive, nonrandomized clinical trial. Seventy-three eligible patients (109 eyes) received the implantation of echelette ERV IOL (Tecnis Symfony ZXR00) or diffractive bifocal IOL (Tecnis ZMB00). 1 week, 1 month, and 3 months after surgery, visual acuities at different distances were examined. At 3 months, defocus curves, contrast sensitivities (CSs) with and without glare, optic path difference (OPD) scans, and questionnaires were evaluated. Regression analyses were applied to discover influence factors on postoperative vision. Results ZXR00 showed better distance (P < 0.05) and intermediate (P < 0.001) visual acuities, while ZMB00 was better at distance-corrected near visual acuity (P < 0.001). Multivariate analyses indicated that worse intermediate (P < 0.001) and near vision (P=0.013) of ZMB00 might occur in patients with longer axial length. ZXR00 demonstrated smoother defocus curve and higher CSs. Superior modulation transfer function (MTF) and higher Strehl ratio (P < 0.05) were shown in ZXR00. In questionnaire evaluation, ZXR00 received better outcomes in self-reported vision, Visual Function-14 (VF-14) questionnaire, Quality of Vision (QoV) questionnaire, satisfaction, and recommendation grades. Spectacle dependence did not differ between ZXR00 and ZMB00 statistically. Conclusion ZXR00 proved to be remarkable in distance and intermediate vision, defocus curve smoothness, CSs, and visual comfort, while ZMB00 achieved better near vision. ZXR00 may attain better near vision if postoperative SE remains slightly negative. Patients with relatively longer axial length might receive less favorable intermediate and near vision after ZMB00 implantation. This trial is registered with ChiCTR-ONC-17011119.

Comparison Between an Intraocular Lens With Extended Depth of Focus (Tecnis Symfony ZXR00) and a New Monofocal Intraocular Lens With Enhanced Intermediate Vision (Tecnis Eyhance ICB00)

“… 44 The ZXR00 offered consistent and excellent visual performance, with minimal degrees of visual disturbance in comparison with other multifocal IOLs. 8 , 25 , 33 , 37 , 45 – 47 However, it showed poor optical quality compared to the ICB00, which showed results similar to those for monofocal IOLs. 3 , 14 , 21 , 34 …”

Clinical Outcomes and Quality of Vision Associated with Bilateral Implantation of a Wavefront Shaping Presbyopia Correcting Intraocular Lens

“…Aggregate raw scores appeared lower (better) than those previously reported for an EDOF lens and bifocal lens using the same questionnaire. 23 There are limitations to the current study. It was at a single center and the number of subjects was limited.…”

Comparison of visual performance between bifocal and extended-depth-of-focus intraocular lenses

“…There have been several reports of comparative studies of these two lenses [13][14][15]. Among these studies, Liu et al [14] performed an orthodox comparative study on visual acuity and quality of vision. Although their study was prospective and had good scienti c validity, it included a small number of patients and did not include the same lens in both eyes.…”