Visual Quality and Reading Performance after Multifocal Intraocular Lens Implantation in Cataract Patients
Peipei Wei, Wenjuan Wan, Can Li
Department of Ophthalmology, the First Affiliated Hospital of Chongqing Medical University, Chongqing Key Lab of Ophthalmology, Chongqing Eye Institute, Chongqing 400016, China
Abstract:Objective: To evaluate the visual quality and reading performance of cataract patients after multifocal intraocular lens implantation. Methods: This was a prospective clinical study. Seventy-five cataract patients (150 eyes) who had cataract surgery in the Department of Ophthalmology, the First Affiliated Hospital of Chongqing Medical University from June 2018 to October 2019 were involved. Twenty-five patients (fifty eyes) were implanted bilaterally with a Tecnis ZCB00 IOL as the monofocal group, 25 patients (fifty eyes) were implanted bilaterally with a Tecnis ZMB00 IOL as the bifocal group and 25 patients (fifty eyes) were implanted bilaterally with an AT Lisa tri.839MP IOL as the trifocal group. The uncorrected distance visual acuity (UDVA), uncorrected intermediate visual acuity (UIVA), uncorrected near visual acuity (UNVA), reading performance at 40 cm and the Chinese NEI-RQL-42 scale were assessed 3 months postoperatively. Data were assessed with a Chi-square test, analysis of variance, Mann-Whitney U test and Kruskal-Wallis test. Results: UDVA showed no significant difference among the three groups (H=3.187, P=0.203); the UIVA of the trifocal group (0.2±0.1) was significantly better than the monofocal group (0.3±0.3)(Z=-2.142, P=0.032) and the bifocal group (0.3±0.2)(Z=-2.041, P=0.041). UNVA was significantly better in the bifocal group (0.3±0.2) and trifocal group (0.3±0.2) than in the monofocal group (0.4±0.2)(t=3.014, P=0.036 and t=2.332, P=0.017, respectively). No statistically significant difference was found in reading acuity at 40 cm (F=0.421, P=0.658), reading speed (F=1.754, P=0.182) or reading mistake rates (H=6.347, P=0.052) among the three groups. Near vision: The bifocal group (100±11) and trifocal group (92±14) were better than the monofocal group (50±42)(U=-3.726, P=0.001 and U=-3.139, P=0.005, respectively); Medium vision: The trifocal group (100±12) was better than the monofocal group (25±75)(U=-3.145, P=0.002); and the trifocal group was better than the bifocal group (75±25)(U=-2.758, P=0.017); Spectacle independence rate: The bifocal group (100±40) and trifocal group (100±25) were better than the monofocal group (30±100)(U=-3.766, P=0.001 and U=-3.004, P=0.008, respectively). Conclusions: Reading performance can evaluate the near visual quality of cataract patients. The AT Lisa tri 839MP IOL can provide distance and near visual acuity and reading performance similar to the Tecnis ZMB00 IOL with better medium visual quality
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