Effects of Ocular Residual Astigmatism on Refractive Outcomes for Myopia Correction After Keratorefractive Lenticule Extraction Surgery.

IF 2.9 3区医学 Q1 OPHTHALMOLOGY

Journal of refractive surgery Pub Date : 2024-12-01 DOI:10.3928/1081597X-20241016-02

Qing Su, Shuang Liang, Huazheng Cao, Mengyuan Shan, Yan Wang

{"title":"Effects of Ocular Residual Astigmatism on Refractive Outcomes for Myopia Correction After Keratorefractive Lenticule Extraction Surgery.","authors":"Qing Su, Shuang Liang, Huazheng Cao, Mengyuan Shan, Yan Wang","doi":"10.3928/1081597X-20241016-02","DOIUrl":null,"url":null,"abstract":"Purpose: To evaluate the effects of ocular residual astigmatism (ORA) on refractive outcomes for patients with astigmatism after keratorefractive lenticule extraction (KLEx) and to identify the ratio of the ORA/manifest refractive cylinder at the corneal plane (MRC) resulting in a greater index of success (IOS).Methods: In total, 892 right eyes that underwent KLEx surgery were included. Astigmatic changes were evaluated using Alpins' vector analysis. Surgical outcomes grouped by ORA/MRC and ORA were compared. In stage 1, eyes were divided into two groups with an ORA/MRC cutoff value of 1. In stage 2, patients with an ORA/MRC ratio of greater than 1 were divided into two groups: those with an ORA of 1.25 diopters (D) or greater and those with an ORA of less than 0.50 D. ORA/MRC thresholds leading to a high IOS were analyzed using receiver operating characteristic (ROC) curves.Results: In stage 1, the mean IOS was 0.13 and 0.21 for the low and high ORA/MRC groups, respectively (P < .001). In stage 2, for high ORA/MRC, the IOS was significantly greater when the ORA was greater than 1.25 D than when the ORA was less than 0.50 D (0.27 versus 0.13, P < .001). ROC curves revealed that participants with an ORA/MRC ratio of greater than 1.8 were more likely to have a higher IOS (P < .001).Conclusions: Patients with a smaller ORA can obtain better correction results. An ORA/MRC ratio of greater than 1.8 may increase the risk of poor astigmatism correction with KLEx. The application of vector planning may improve the refractive outcomes of KLEx. [J Refract Surg. 2024;40(12):e966-e973.].","PeriodicalId":16951,"journal":{"name":"Journal of refractive surgery","volume":"40 12","pages":"e966-e973"},"PeriodicalIF":2.9000,"publicationDate":"2024-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Journal of refractive surgery","FirstCategoryId":"3","ListUrlMain":"https://doi.org/10.3928/1081597X-20241016-02","RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"OPHTHALMOLOGY","Score":null,"Total":0}

引用次数: 0

Abstract

Purpose: To evaluate the effects of ocular residual astigmatism (ORA) on refractive outcomes for patients with astigmatism after keratorefractive lenticule extraction (KLEx) and to identify the ratio of the ORA/manifest refractive cylinder at the corneal plane (MRC) resulting in a greater index of success (IOS).

Methods: In total, 892 right eyes that underwent KLEx surgery were included. Astigmatic changes were evaluated using Alpins' vector analysis. Surgical outcomes grouped by ORA/MRC and ORA were compared. In stage 1, eyes were divided into two groups with an ORA/MRC cutoff value of 1. In stage 2, patients with an ORA/MRC ratio of greater than 1 were divided into two groups: those with an ORA of 1.25 diopters (D) or greater and those with an ORA of less than 0.50 D. ORA/MRC thresholds leading to a high IOS were analyzed using receiver operating characteristic (ROC) curves.

Results: In stage 1, the mean IOS was 0.13 and 0.21 for the low and high ORA/MRC groups, respectively (P < .001). In stage 2, for high ORA/MRC, the IOS was significantly greater when the ORA was greater than 1.25 D than when the ORA was less than 0.50 D (0.27 versus 0.13, P < .001). ROC curves revealed that participants with an ORA/MRC ratio of greater than 1.8 were more likely to have a higher IOS (P < .001).

Conclusions: Patients with a smaller ORA can obtain better correction results. An ORA/MRC ratio of greater than 1.8 may increase the risk of poor astigmatism correction with KLEx. The application of vector planning may improve the refractive outcomes of KLEx. [J Refract Surg. 2024;40(12):e966-e973.].

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

$Journal of refractive surgery$

Journal of refractive surgery 医学-外科

CiteScore

5.10

自引率

12.50%

发文量

160

审稿时长

4-8 weeks

期刊介绍： The Journal of Refractive Surgery, the official journal of the International Society of Refractive Surgery, a partner of the American Academy of Ophthalmology, has been a monthly peer-reviewed forum for original research, review, and evaluation of refractive and lens-based surgical procedures for more than 30 years. Practical, clinically valuable articles provide readers with the most up-to-date information regarding advances in the field of refractive surgery. Begin to explore the Journal and all of its great benefits such as: • Columns including “Translational Science,” “Surgical Techniques,” and “Biomechanics” • Supplemental videos and materials available for many articles • Access to current articles, as well as several years of archived content • Articles posted online just 2 months after acceptance.