Evaluating the efficacy of femtosecond laser-assisted arcuate keratotomy in correcting low-to-moderate astigmatism during femtosecond laser-assisted cataract surgery in Chinese patients.

IF 2.1 4区医学 Q3 ENGINEERING, BIOMEDICAL

Lasers in Medical Science Pub Date : 2025-03-17 DOI:10.1007/s10103-025-04394-y

Xue Ding, Shaowei Li, Fan Zhang, Chenxi Hu, Ruihua Zhao, Weikang Bi, Daguang Bi, Qiumei Li

{"title":"Evaluating the efficacy of femtosecond laser-assisted arcuate keratotomy in correcting low-to-moderate astigmatism during femtosecond laser-assisted cataract surgery in Chinese patients.","authors":"Xue Ding, Shaowei Li, Fan Zhang, Chenxi Hu, Ruihua Zhao, Weikang Bi, Daguang Bi, Qiumei Li","doi":"10.1007/s10103-025-04394-y","DOIUrl":null,"url":null,"abstract":"Purpose: To evaluate the astigmatism correcting effect of the femtosecond laser-assisted arcuate keratotomy (FSAK) during femtosecond laser-assisted cataract surgery (FLACS) in Chinese people.Methods: The retrospective study included consecutive patients who underwent combined FSAK and FLACS, with corneal astigmatism of 0.75 to 2.25 diopters (D). Three vectors of astigmatism were analyzed using the Alpines vector analysis: target-induced astigmatism (TIA), surgically induced astigmatism (SIA), and difference vector (DV). The correction index (CI), angle of error (AE), magnitude of error (ME), and coefficient of adjustment (CA) were calculated. Corneal astigmatism was measured before and 3 months after surgery.Results: A total of 129 eyes from 107 patients were enrolled. The corneal astigmatism was significantly reduced from 1.34 ± 0.36 D to 0.69 ± 0.47 D (P < 0.001). The TIA was 1.36 ± 0.37 D, the SIA was 1.16 ± 0.69 D, and the DV was 0.7 ± 0.47 D. The ME (difference between SIA and TIA) was - 0.2 ± 0.65 D, and the CI (ratio of SIA to TIA) was 0.86 ± 0.49. The CA (inverse of the CI) was 1.79 ± 1.65. The AE was - 0.02° ± 18.33°. The corneal astigmatism significantly decreased in all axes of astigmatism (P < 0.001). Postoperatively, the residual astigmatism magnitudes were 0.76 ± 0.44 D in with-the-rule (WTR), 0.63 ± 0.51 D in against-the-rule (ATR), and 0.62 ± 0.44 D in oblique (OBL). The CI values were 0.65 ± 0.31, 1.22 ± 0.52, and 0.80 ± 0.40 in WTR, ATR, and OBL, respectively.Conclusion: The modified FSAK for Chinese cataract patients effectively and safely reduced corneal astigmatism.","PeriodicalId":17978,"journal":{"name":"Lasers in Medical Science","volume":"40 1","pages":"142"},"PeriodicalIF":2.1000,"publicationDate":"2025-03-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Lasers in Medical Science","FirstCategoryId":"5","ListUrlMain":"https://doi.org/10.1007/s10103-025-04394-y","RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q3","JCRName":"ENGINEERING, BIOMEDICAL","Score":null,"Total":0}

引用次数: 0

Abstract

Purpose: To evaluate the astigmatism correcting effect of the femtosecond laser-assisted arcuate keratotomy (FSAK) during femtosecond laser-assisted cataract surgery (FLACS) in Chinese people.

Methods: The retrospective study included consecutive patients who underwent combined FSAK and FLACS, with corneal astigmatism of 0.75 to 2.25 diopters (D). Three vectors of astigmatism were analyzed using the Alpines vector analysis: target-induced astigmatism (TIA), surgically induced astigmatism (SIA), and difference vector (DV). The correction index (CI), angle of error (AE), magnitude of error (ME), and coefficient of adjustment (CA) were calculated. Corneal astigmatism was measured before and 3 months after surgery.

Results: A total of 129 eyes from 107 patients were enrolled. The corneal astigmatism was significantly reduced from 1.34 ± 0.36 D to 0.69 ± 0.47 D (P < 0.001). The TIA was 1.36 ± 0.37 D, the SIA was 1.16 ± 0.69 D, and the DV was 0.7 ± 0.47 D. The ME (difference between SIA and TIA) was - 0.2 ± 0.65 D, and the CI (ratio of SIA to TIA) was 0.86 ± 0.49. The CA (inverse of the CI) was 1.79 ± 1.65. The AE was - 0.02° ± 18.33°. The corneal astigmatism significantly decreased in all axes of astigmatism (P < 0.001). Postoperatively, the residual astigmatism magnitudes were 0.76 ± 0.44 D in with-the-rule (WTR), 0.63 ± 0.51 D in against-the-rule (ATR), and 0.62 ± 0.44 D in oblique (OBL). The CI values were 0.65 ± 0.31, 1.22 ± 0.52, and 0.80 ± 0.40 in WTR, ATR, and OBL, respectively.

Conclusion: The modified FSAK for Chinese cataract patients effectively and safely reduced corneal astigmatism.

查看原文本刊更多论文

求助全文

约1分钟内获得全文求助全文

来源期刊

Lasers in Medical Science 医学-工程：生物医学

CiteScore

4.50

自引率

4.80%

发文量

192

审稿时长

3-8 weeks

期刊介绍： Lasers in Medical Science (LIMS) has established itself as the leading international journal in the rapidly expanding field of medical and dental applications of lasers and light. It provides a forum for the publication of papers on the technical, experimental, and clinical aspects of the use of medical lasers, including lasers in surgery, endoscopy, angioplasty, hyperthermia of tumors, and photodynamic therapy. In addition to medical laser applications, LIMS presents high-quality manuscripts on a wide range of dental topics, including aesthetic dentistry, endodontics, orthodontics, and prosthodontics. The journal publishes articles on the medical and dental applications of novel laser technologies, light delivery systems, sensors to monitor laser effects, basic laser-tissue interactions, and the modeling of laser-tissue interactions. Beyond laser applications, LIMS features articles relating to the use of non-laser light-tissue interactions.