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Wang Y, Lou X, Qian S, Li Y, Wu X, Li S, Wang Y, Zhao Y, Chang P. Comparison of the effect of capsular bend on the rotational stability between 2 toric intraocular lenses. J Cataract Refract Surg 2024; 50:283-288. [PMID: 38085243 PMCID: PMC10878446 DOI: 10.1097/j.jcrs.0000000000001373] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/01/2023] [Revised: 11/17/2023] [Accepted: 11/20/2023] [Indexed: 02/22/2024]
Abstract
PURPOSE To compare the effect of capsular bend on the rotational stability between 2 toric intraocular lenses (IOLs). SETTING Eye Hospital of Wenzhou Medical University, Hangzhou, Zhejiang Province, China. DESIGN Prospective study. METHODS Patients with preexisting astigmatism received AcrySof IQ (SN6AT) or TECNIS (ZCT/ZMT) toric IOL during cataract surgery. CASIA2 was used to record the toric IOL axial orientation and capsular bend index (CBI) at the 1-day, 1-week, 1-month, and 3-month interval postoperatively. The postoperative rotational stability and CBI of both models were compared. RESULTS A total of 58 eyes from 58 patients were enrolled in this study. The total misalignment of the TECNIS (ZCT/ZMT) group (6.96 ± 5.10 degrees, 7.41 ± 5.19 degrees, 6.93 ± 5.29 degrees, and 6.86 ± 5. 27 degrees) was significantly higher than that of the AcrySof IQ (SN6AT) group (3.55 ± 2.21 degrees, 4.00 ± 2.74 degrees, 3.72 ± 2.72 degrees, and 3.52 ± 2.50 degrees) at all follow-up intervals ( P < .05). The mean rotation of the TECNIS (ZCT/ZMT) group (2.66 ± 2.18 degrees) was significantly greater than that of the AcrySof IQ (SN6AT) group (1.65 ± 1.47 degrees) from 1 day to 1 week postoperatively ( P < .05). The capsular bend formation in the TECNIS (ZCT/ZMT) group was delayed compared with the AcrySof IQ (SN6AT) group ( P < .05, at the 1-week, 1-month, and 3-month interval). The TECNIS (ZCT/ZMT) group showed fibrosis in the peripheral anterior capsule, leading to its stretching away from the IOL surface, while the AcrySof IQ (SN6AT) group exhibited gentle adherence of the anterior capsule to the IOL surface. CONCLUSIONS The AcrySof IQ toric IOL (SN6AT) exhibited greater rotational stability than the TECNIS toric IOL (ZCT/ZMT), which may partially result from the delay in capsular bend formation of TECNIS at the 1-day to 1-week follow-up postoperatively.
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Affiliation(s)
- Yiyi Wang
- From the Eye Hospital and School of Ophthalmology and Optometry, Wenzhou Medical University, Wenzhou, China (Yiyi Wang, Lou, Y. Li, Wu, S. Li, Yalan Wang, Zhao, Chang); National Clinical Research Center for Ocular Diseases, Eye Hospital, Wenzhou Medical University, Wenzhou, China (Yiyi Wang, Lou, Y. Li, Wu, S. Li, Yalan Wang, Zhao, Chang); Eye Hospital of Wenzhou Medical University Hangzhou Branch, Hangzhou, China (Yiyi Wang, Lou, Y. Li, Wu, S. Li, Yalan Wang, Zhao, Chang); The First Affiliated Hospital of Ningbo University, Ningbo, China (Qian)
| | - Xicong Lou
- From the Eye Hospital and School of Ophthalmology and Optometry, Wenzhou Medical University, Wenzhou, China (Yiyi Wang, Lou, Y. Li, Wu, S. Li, Yalan Wang, Zhao, Chang); National Clinical Research Center for Ocular Diseases, Eye Hospital, Wenzhou Medical University, Wenzhou, China (Yiyi Wang, Lou, Y. Li, Wu, S. Li, Yalan Wang, Zhao, Chang); Eye Hospital of Wenzhou Medical University Hangzhou Branch, Hangzhou, China (Yiyi Wang, Lou, Y. Li, Wu, S. Li, Yalan Wang, Zhao, Chang); The First Affiliated Hospital of Ningbo University, Ningbo, China (Qian)
| | - Shuyi Qian
- From the Eye Hospital and School of Ophthalmology and Optometry, Wenzhou Medical University, Wenzhou, China (Yiyi Wang, Lou, Y. Li, Wu, S. Li, Yalan Wang, Zhao, Chang); National Clinical Research Center for Ocular Diseases, Eye Hospital, Wenzhou Medical University, Wenzhou, China (Yiyi Wang, Lou, Y. Li, Wu, S. Li, Yalan Wang, Zhao, Chang); Eye Hospital of Wenzhou Medical University Hangzhou Branch, Hangzhou, China (Yiyi Wang, Lou, Y. Li, Wu, S. Li, Yalan Wang, Zhao, Chang); The First Affiliated Hospital of Ningbo University, Ningbo, China (Qian)
| | - Yuanyuan Li
- From the Eye Hospital and School of Ophthalmology and Optometry, Wenzhou Medical University, Wenzhou, China (Yiyi Wang, Lou, Y. Li, Wu, S. Li, Yalan Wang, Zhao, Chang); National Clinical Research Center for Ocular Diseases, Eye Hospital, Wenzhou Medical University, Wenzhou, China (Yiyi Wang, Lou, Y. Li, Wu, S. Li, Yalan Wang, Zhao, Chang); Eye Hospital of Wenzhou Medical University Hangzhou Branch, Hangzhou, China (Yiyi Wang, Lou, Y. Li, Wu, S. Li, Yalan Wang, Zhao, Chang); The First Affiliated Hospital of Ningbo University, Ningbo, China (Qian)
| | - Xueer Wu
- From the Eye Hospital and School of Ophthalmology and Optometry, Wenzhou Medical University, Wenzhou, China (Yiyi Wang, Lou, Y. Li, Wu, S. Li, Yalan Wang, Zhao, Chang); National Clinical Research Center for Ocular Diseases, Eye Hospital, Wenzhou Medical University, Wenzhou, China (Yiyi Wang, Lou, Y. Li, Wu, S. Li, Yalan Wang, Zhao, Chang); Eye Hospital of Wenzhou Medical University Hangzhou Branch, Hangzhou, China (Yiyi Wang, Lou, Y. Li, Wu, S. Li, Yalan Wang, Zhao, Chang); The First Affiliated Hospital of Ningbo University, Ningbo, China (Qian)
| | - Siyan Li
- From the Eye Hospital and School of Ophthalmology and Optometry, Wenzhou Medical University, Wenzhou, China (Yiyi Wang, Lou, Y. Li, Wu, S. Li, Yalan Wang, Zhao, Chang); National Clinical Research Center for Ocular Diseases, Eye Hospital, Wenzhou Medical University, Wenzhou, China (Yiyi Wang, Lou, Y. Li, Wu, S. Li, Yalan Wang, Zhao, Chang); Eye Hospital of Wenzhou Medical University Hangzhou Branch, Hangzhou, China (Yiyi Wang, Lou, Y. Li, Wu, S. Li, Yalan Wang, Zhao, Chang); The First Affiliated Hospital of Ningbo University, Ningbo, China (Qian)
| | - Yalan Wang
- From the Eye Hospital and School of Ophthalmology and Optometry, Wenzhou Medical University, Wenzhou, China (Yiyi Wang, Lou, Y. Li, Wu, S. Li, Yalan Wang, Zhao, Chang); National Clinical Research Center for Ocular Diseases, Eye Hospital, Wenzhou Medical University, Wenzhou, China (Yiyi Wang, Lou, Y. Li, Wu, S. Li, Yalan Wang, Zhao, Chang); Eye Hospital of Wenzhou Medical University Hangzhou Branch, Hangzhou, China (Yiyi Wang, Lou, Y. Li, Wu, S. Li, Yalan Wang, Zhao, Chang); The First Affiliated Hospital of Ningbo University, Ningbo, China (Qian)
| | - Yune Zhao
- From the Eye Hospital and School of Ophthalmology and Optometry, Wenzhou Medical University, Wenzhou, China (Yiyi Wang, Lou, Y. Li, Wu, S. Li, Yalan Wang, Zhao, Chang); National Clinical Research Center for Ocular Diseases, Eye Hospital, Wenzhou Medical University, Wenzhou, China (Yiyi Wang, Lou, Y. Li, Wu, S. Li, Yalan Wang, Zhao, Chang); Eye Hospital of Wenzhou Medical University Hangzhou Branch, Hangzhou, China (Yiyi Wang, Lou, Y. Li, Wu, S. Li, Yalan Wang, Zhao, Chang); The First Affiliated Hospital of Ningbo University, Ningbo, China (Qian)
| | - Pingjun Chang
- From the Eye Hospital and School of Ophthalmology and Optometry, Wenzhou Medical University, Wenzhou, China (Yiyi Wang, Lou, Y. Li, Wu, S. Li, Yalan Wang, Zhao, Chang); National Clinical Research Center for Ocular Diseases, Eye Hospital, Wenzhou Medical University, Wenzhou, China (Yiyi Wang, Lou, Y. Li, Wu, S. Li, Yalan Wang, Zhao, Chang); Eye Hospital of Wenzhou Medical University Hangzhou Branch, Hangzhou, China (Yiyi Wang, Lou, Y. Li, Wu, S. Li, Yalan Wang, Zhao, Chang); The First Affiliated Hospital of Ningbo University, Ningbo, China (Qian)
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Alshammari T, Tarazi A, Aloqaili T, Aloqaily M, AlRyalat SA. Intraocular lens power calculation formulas: a scientometric analysis. MEDICAL HYPOTHESIS, DISCOVERY & INNOVATION OPHTHALMOLOGY JOURNAL 2023; 12:115-126. [PMID: 38476575 PMCID: PMC10926310 DOI: 10.51329/mehdiophthal1477] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/28/2023] [Accepted: 12/26/2023] [Indexed: 03/14/2024]
Abstract
Background The most accurate method of intraocular lens (IOL) power calculation in cataract surgery has not been determined, and further studies are needed to reach a consensus. The aim of this study was to assess publications related to IOL power calculation formulas, mapping their yearly trends, most productive authors, top publishing countries and institutions, and areas of specialization for IOL power formulas. Methods We conducted a comprehensive analysis of research articles published on the topic of IOL power calculation formulas. Using PubMed, we employed appropriate search terms and filtered the results for the period of January 1, 1946, to June 28, 2023. Data were analyzed using CiteSpace, VOSviewer, and Microsoft Excel programs. The visual representations of the collected data through the use of figures was provided to demonstrate the aspects of IOL power calculation research. Results We retrieved 5475 documents in the initial search. Analysis of these documents revealed an increase in the number of publications, from one publication in 1946 to 201 publications in 2023. The top three countries contributing to these publications were the United States, China, and Japan, collectively accounting for over 27% of the total articles. However, the two institutions with the highest contributions were located in the United Kingdom and Hungary, neither of which was among the top 10 countries in overall contributions. Overall 15 326 authors contributed to publications pertaining to IOL power calculation formulas. Among these authors, the most prolific contributors included Achim Langenbucher from Saarland University (Germany), Giacomo Savini from G.B. Bietti Foundation I.R.C.C.S. (Italy), and Kenneth J Hoffer from the University of California (United States). Saarland University emerged as the most productive institution, contributing equally to two distinct departments: the Dr. Rolf M. Schwiete Center for Limbal Stem Cell Research and Congenital Aniridia, as well as the Department of Experimental Ophthalmology. The School of Physical Science at the Open University in the United Kingdom engaged in partnership with various institutions including Eye & Laser Clinic Castrop Rauxel in Germany and Johannes Kepler University Linz in Austria. Among the top 10 keywords found in the publications were "cataract", "cataract surgery", and "intraocular lens". Conclusions This study represents the first scientometric analysis of publications related to IOL power calculation formulas. The study offers valuable insights into the geographic distribution, contributing authors, and emphasis of research on the IOL power calculation formulas. Further cooperation is essential to pinpoint the most suitable formula and to address gaps in our current understanding.
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Affiliation(s)
- Taher Alshammari
- Department of Special Surgery, Prince Mohammed Medical City, Al-Jouf, Saudi Arabia
| | - Alaa Tarazi
- School of Medicine, University of Jordan, Amman, Jordan
| | | | - Mohammed Aloqaily
- Internal Medicine Department, Hamad Medical Corporation, Doha, Qatar
| | - Saif Aldeen AlRyalat
- Department of Ophthalmology, University of Jordan, Amman, Jordan
- Department of Ophthalmology, Houston Methodist Hospital, Houston Texas, USA
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Li H, Sun J, Bai H, Leng L, Dai Y, Wu X. Incidence and Risk Factors of Repositioning Surgery to Correct Misalignment of Toric Intraocular Lenses after Cataract Surgery: A Single-Center Retrospective Observational Study. Ophthalmic Res 2022; 66:259-264. [PMID: 36223730 DOI: 10.1159/000527408] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/19/2022] [Accepted: 09/26/2022] [Indexed: 11/19/2022]
Abstract
PURPOSE The aim of this study was to analyze the incidence and outcomes of repositioning surgery to correct misalignment of several toric intraocular lenses (IOLs) after cataract surgery. METHODS In this retrospective study, patients who underwent repositioning surgery to correct misalignment of toric IOLs following cataract surgery between January 2019 and December 2021 were enrolled. The medical data on patients' age, gender, preoperative axial length, corneal astigmatism, the axis of astigmatism, IOL models, IOL axis, uncorrected distance visual acuity, residual refraction, and postoperative outcomes were analyzed. RESULTS Among the 1,135 eyes implanted with toric IOLs at Qingdao Eye Hospital, 23 (2.026%, 23/1,135) underwent repositioning surgery. Univariate analysis revealed that the incidence of repositioning surgery was significantly lower with AcrySof (0.636%, 5/786) than with ZEISS (2.959%, 5/169) and TECNIS (7.222%, 13/180) IOL platforms; the incidence of repositioning surgery with monofocal toric IOLs (1.169%, 11/941) was significantly lower than multifocal toric IOLs (6.186%, 12/194) (p < 0.001); additionally, a significant difference in age was also observed (p = 0.002). Multivariate logistic regression analysis showed that the IOL platform (p = 0.004) and younger age (p = 0.006) were independent risk factors for repositioning surgery. CONCLUSION The incidence of repositioning surgery of toric IOLs after cataract surgery was 2.026%. It was linked to the IOL platform, multifocal toric IOLs, and younger age.
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Affiliation(s)
- Honglei Li
- Qingdao Eye Hospital of Shandong First Medical University, Qingdao, China,
- State Key Laboratory Cultivation Base, Shandong Provincial Key Laboratory of Ophthalmology, Shandong Eye Institute, Shandong First Medical University & Shandong Academy of Medical Sciences, Qingdao, China,
| | - Jiajun Sun
- Qingdao Eye Hospital of Shandong First Medical University, Qingdao, China
- State Key Laboratory Cultivation Base, Shandong Provincial Key Laboratory of Ophthalmology, Shandong Eye Institute, Shandong First Medical University & Shandong Academy of Medical Sciences, Qingdao, China
| | - Huiran Bai
- Qingdao Eye Hospital of Shandong First Medical University, Qingdao, China
- State Key Laboratory Cultivation Base, Shandong Provincial Key Laboratory of Ophthalmology, Shandong Eye Institute, Shandong First Medical University & Shandong Academy of Medical Sciences, Qingdao, China
| | - Lin Leng
- Qingdao Eye Hospital of Shandong First Medical University, Qingdao, China
- State Key Laboratory Cultivation Base, Shandong Provincial Key Laboratory of Ophthalmology, Shandong Eye Institute, Shandong First Medical University & Shandong Academy of Medical Sciences, Qingdao, China
| | - Yunhai Dai
- Qingdao Eye Hospital of Shandong First Medical University, Qingdao, China
- State Key Laboratory Cultivation Base, Shandong Provincial Key Laboratory of Ophthalmology, Shandong Eye Institute, Shandong First Medical University & Shandong Academy of Medical Sciences, Qingdao, China
| | - Xiaoming Wu
- Qingdao Eye Hospital of Shandong First Medical University, Qingdao, China
- State Key Laboratory Cultivation Base, Shandong Provincial Key Laboratory of Ophthalmology, Shandong Eye Institute, Shandong First Medical University & Shandong Academy of Medical Sciences, Qingdao, China
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