Factors influencing 1-year rotational stability of AcrySof Toric intraocular lenses

医学 屈光度 眼科 超声乳化术 人工晶状体 人工晶状体 散瞳 散光 视力 光学 物理
作者
Xiangjia Zhu,Wenwen He,Keke Zhang,Yi Lü
出处
期刊:British Journal of Ophthalmology [BMJ]
卷期号:100 (2): 263-268 被引量:105
标识
DOI:10.1136/bjophthalmol-2015-306656
摘要

To investigate the 1-year rotational stability of AcrySof Toric intraocular lenses (IOLs) and factors influencing their stability.This retrospective study enrolled 75 patients who underwent phacoemulsification, and were implanted with an AcrySof Toric IOL for 1 year. Their preoperative clinical data were reviewed. The 1-year clinical outcomes included uncorrected visual acuity, best-corrected visual acuity and residual astigmatism. Rotation of the IOL and the grade of anterior capsular opacification (ACO; graded from 0=none to 3=severe) were evaluated after mydriasis.Of the 75 eyes analysed, 29.33% had high myopia. Residual astigmatism at 1 year (-0.76±0.47 dioptre(D)) was significantly reduced compared with the preoperative corneal astigmatism (2.08±0.71 D). The mean absolute rotation of the IOL was 8.83±5.26°. Toric IOL rotation was significantly and positively correlated with the degree of residual astigmatism in the T3 (Pearson's r=0.552, p<0.001) and T4 groups (Pearson's r=0.622, p=0.003). Regarding factors associated with IOL rotation, toric IOL rotation was positively correlated with axial length (AXL; Pearson's r=0.335, p=0.003) and negatively correlated with ACO grade (Spearman's r=-0.541, p<0.001). On multiple linear regression analysis, only AXL (B=0.889, p=0.031) and ACO grade (B=-3.216, p<0.001) were predictors of toric IOL rotation (R(2)=0.397).Long AXL is a risk factor for toric IOL rotation, while higher ACO grade may decrease toric IOL rotation, indicating that reducing the polishing of anterior capsule may improve the rotational stability of a toric IOL.NCT02182921.
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