屈光度
医学
眼科
视力
散光
折射误差
优势比
超声乳化术
验光服务
残余物
人工晶状体
光学
数学
内科学
算法
物理
作者
Steven C. Schallhorn,Keith A. Hettinger,Martina Pelouskova,David Teenan,Jan A. Venter,Stephen J. Hannan,Julie M. Schallhorn
出处
期刊:Journal of Cataract and Refractive Surgery
[Ovid Technologies (Wolters Kluwer)]
日期:2020-12-19
卷期号:47 (8): 991-998
被引量:48
标识
DOI:10.1097/j.jcrs.0000000000000560
摘要
To evaluate the effect of residual astigmatism on postoperative visual acuity and satisfaction after intraocular lens (IOL) surgery.Private practice, United Kingdom.Retrospective case series.Postoperative data of patients who had previously undergone refractive lens exchange or cataract surgery were used in a multivariate regression model to assess the effect of residual astigmatism on 3 months postoperative monocular uncorrected distance visual acuity (UDVA) and patient satisfaction. The analysis was based on residual refraction in the dominant eye of each patient. Odds ratios were calculated to demonstrate the effect of increasing residual astigmatism on UDVA and satisfaction with separate calculations for monofocal and multifocal IOLs.Three months postoperative outcomes of 17 152 dominant eyes were used in multivariate regression analysis. Compared with eyes with 0.00 diopter (D) residual astigmatism, the odds of not achieving 20/20 vision in eyes with 0.25 to 0.50 D residual astigmatism increased by a factor of 1.7 and 1.9 (P < .0001) in monofocal and multifocal IOLs, respectively. For the residual astigmatism 0.75 to 1.00 D, the odds ratio for not achieving 20/20 vision compared with eyes with no astigmatism was 6.1 for monofocal and 6.5 for multifocal IOLs (P < .0001). The effect of residual astigmatism on satisfaction was more evident at the 0.75 to 1.00 D level, where the odds of not being satisfied with vision increased by a factor of 2.0 and 1.5 in patients with monofocal and multifocal IOLs, respectively (P < .0001). The orientation of astigmatism was not a significant predictor in multivariate analysis.Multivariate analysis in a large population of patients demonstrated that low levels of residual astigmatism can degrade visual acuity. Corneal astigmatism of 0.50 D or greater should be included in surgical planning.
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