Abstract
Objective
This study aimed to evaluate the visual performance and rotational stability of the multifocal toric intraocular lens in myopes.
Methods
This prospective, observational study included patients with an axial length of ≥24.5 mm and regular corneal astigmatism of >1 diopter who underwent phacoemulsification cataract surgery and implantation of a multifocal toric intraocular lens (AT LISA toric 909M). The visual acuity, defocus curves, residual astigmatism, rotational stability, higher-order aberrations (HOAs), modulation transfer function (MTF), spectacle dependence and patient satisfaction were evaluated 3 months after surgery.
Results
Forty-three eyes from 30 patients were enrolled in this study. Postoperatively, uncorrected distance and near visual acuities (logMAR) were 0.09 ± 0.08 (standard deviation, SD) and 0.14 ± 0.08, respectively. The defocus curve analysis provided a bimodal curve showing two peaks of maximum vision at 0.0 D and at −3.0 D defocus level. The multifocal toric intraocular lens showed excellent rotational stability; the mean rotation was 4.02 ± 2.49 (SD) degrees at 3 months postoperatively. Refractive predictability was excellent with a mean spherical equivalent of 0.19 ± 0.37 (SD) diopters (D) and a mean refractive cylinder of -0.34 ± 0.39 (SD) D.
Conclusions
The diffractive multifocal toric intraocular lens, AT LISA toric 909M, provided effective distance and near visual acuities in myopic eyes. It was a predictable and effective device with good rotational stability for the correction of preexisting astigmatism during cataract surgery. In this study, more than 80% of patients achieved spectacle independence.
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Data availability
All data relevant to the study are included in the article.
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Xiaoming Wu contributed to the conception of the study and provided some kind advice on the manusciript; Jiajun Sun sorted out the data; Xiujing Shi and Honglei Li performed the data analyses; Huiran Bai wrote the manuscript.
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The Ethical Review Board: the study was approved by the Institutional Review Board of Qingdao Eye Hospital of Shandong First Medical University. The approval number is QEKY2021-07.
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All patients in the study received informed consent before using their clinical data.
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Bai, H., Sun, J., Shi, X. et al. Visual performance and rotational stability of a multifocal toric intraocular lens in myopic eyes. Graefes Arch Clin Exp Ophthalmol 261, 2557–2565 (2023). https://doi.org/10.1007/s00417-023-06046-9
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DOI: https://doi.org/10.1007/s00417-023-06046-9