학술논문
Evaluation of Astigmatism-Correcting Efficiency and Rotational Stability after Cataract Surgery with a Double-Loop Haptic Toric Intraocular Lens: A 1-Year Follow-Up.
Document Type
Academic Journal
Author
Nováček LV; Department of Ophthalmology, Institute of Aviation Medicine Prague, Prague, Czechia.; Department of Ophthalmology, 1st Faculty of Medicine, Charles University and the Military University Hospital Prague, Prague, Czechia.; Němcová M; Department of Ophthalmology, Institute of Aviation Medicine Prague, Prague, Czechia.; Tyx K; Department of Ophthalmology, Institute of Aviation Medicine Prague, Prague, Czechia.; Lahodová K; Department of Ophthalmology, Institute of Aviation Medicine Prague, Prague, Czechia.; Rejmont L; Department of Ophthalmology, 1st Faculty of Medicine, Charles University and the Military University Hospital Prague, Prague, Czechia.; Rozsíval P; Department of Ophthalmology, Institute of Aviation Medicine Prague, Prague, Czechia.; Department of Ophthalmology Charles University Prague, Faculty of Medicine in Hradec Králové, Prague, Czechia.; Studený P; Department of Ophthalmology Královské Vinohrady University Hospital, and 3rd Faculty of Medicine, Charles University, Prague, Czechia.
Source
Publisher: S. Karger Country of Publication: Switzerland NLM ID: 101692630 Publication Model: eCollection Cited Medium: Internet ISSN: 2296-6870 (Electronic) Linking ISSN: 22966870 NLM ISO Abbreviation: Biomed Hub Subsets: PubMed not MEDLINE
Subject
Language
English
Abstract
Objectives: The aim of this study was to assess the clinical outcomes, predictability of results, efficiency of astigmatism correction, and rotational stability of the Bi-Flex 677TAY (Medicontur Medical Engineering Ltd., Zsámbék, Hungary) monofocal toric intraocular lens (IOL) designed for cataract patients with astigmatism.
Methods: The IOLs were implanted either mono- or binocularly, following routine cataract surgery. Visual and refractive outcomes, as well as off-axis rotation were assessed throughout a 1-year follow-up period. All clinical data for this work were collected retrospectively. Vector analysis based on the Alpins method was performed to assess the efficiency of astigmatism correction.
Results: No complications or adverse events occurred during surgery or the follow-up period. IOL implantation brought 88% of eyes into the ±0.50 D, and 100% into the ± 1.00 D range compared to the target spherical equivalent refraction, emmetropia. Astigmatism correction brought similar results: 94% of eyes had a residual cylindrical error of not higher than ±0.50 D, and 97% were within ±1.00 D. Vector analysis resulted in a correction index of 0.96 and a difference vector of 0.17. Both refractive and visual outcomes showed long-term stability. During the 12-month follow-up period, no eyes had a rotation of >5°. Absolute rotation after 1 year was 1.42 ± 1.89° (median = 0°), while signed rotation was 1.06 ± 2.12° (median = 0°).
Conclusion: The Bi-Flex 677TAY monofocal toric IOL, designed by Medicontur Medical Engineering Ltd., represents an efficient and safe solution for cataract patients with astigmatism. Clinical and refractive outcomes are predictable, and rotational stability ensures long-term visual comfort.
Competing Interests: The authors have no conflicts of interest to declare.
(Copyright © 2021 by S. Karger AG, Basel.)
Methods: The IOLs were implanted either mono- or binocularly, following routine cataract surgery. Visual and refractive outcomes, as well as off-axis rotation were assessed throughout a 1-year follow-up period. All clinical data for this work were collected retrospectively. Vector analysis based on the Alpins method was performed to assess the efficiency of astigmatism correction.
Results: No complications or adverse events occurred during surgery or the follow-up period. IOL implantation brought 88% of eyes into the ±0.50 D, and 100% into the ± 1.00 D range compared to the target spherical equivalent refraction, emmetropia. Astigmatism correction brought similar results: 94% of eyes had a residual cylindrical error of not higher than ±0.50 D, and 97% were within ±1.00 D. Vector analysis resulted in a correction index of 0.96 and a difference vector of 0.17. Both refractive and visual outcomes showed long-term stability. During the 12-month follow-up period, no eyes had a rotation of >5°. Absolute rotation after 1 year was 1.42 ± 1.89° (median = 0°), while signed rotation was 1.06 ± 2.12° (median = 0°).
Conclusion: The Bi-Flex 677TAY monofocal toric IOL, designed by Medicontur Medical Engineering Ltd., represents an efficient and safe solution for cataract patients with astigmatism. Clinical and refractive outcomes are predictable, and rotational stability ensures long-term visual comfort.
Competing Interests: The authors have no conflicts of interest to declare.
(Copyright © 2021 by S. Karger AG, Basel.)