Department of Ophthalmology, Qingdao Women and Children Hospital, Qingdao University, Qingdao, China.
Department of Ophthalmology, Xuanwu Hospital, Capital Medical University, Beijing, China.
Ophthalmic Res. 2020;63(2):165-173. doi: 10.1159/000504716. Epub 2019 Dec 17.
To evaluate which ocular axis, the corneal topographic axis (CTA), pupillary axis (PA) or line of sight (LOS), for measuring the tilt and decentration of intraocular lens (IOL) is most relevant to correct distance visual acuity (CDVA).
A Scheimpflug device (Pentacam HR) was prospectively used to determine the tilt and decentration of IOLs in vivo 3 months after cataract surgery. A new method was developed to reliably measure PA and LOS. We further evaluated CTA and then used Spearman correlation coefficient and linear regression to assess the correlation between CDVA and IOL displacement based on the data of three different ocular axes.
Forty-six eyes from 46 patients were evaluated. The majority of decentration and tilt of IOL with reference to CTA, PA and LOS were towards the subtemporal direction. We found that the horizontal meridian data measured using CTA and PA were statistically significantly different (p = 0.011 for tilt; p = 0.005 for decentration). The correlation between CDVA and the distance of decentration temporally (r = -0.344, p = 0.035) and inferiorly (r = -0.336, p = 0.042) of the IOL with regard to CTA was significant. PA and LOS measurements had no correlation with any indices.
Assessment of tilt and decentration of the IOL with reference to different ocular axes was markedly different. IOL tilt and decentration measured by CTA were significantly correlated with CDVA.
评估角膜地形轴（CTA）、瞳孔轴（PA）或视线（LOS）等眼球轴在测量人工晶状体（IOL）倾斜和偏心度方面与纠正远距视力（CDVA）的相关性。
前瞻性地使用Scheimpflug 设备（Pentacam HR）在白内障手术后 3 个月时在体内确定 IOL 的倾斜和偏心度。开发了一种新方法来可靠地测量 PA 和 LOS。我们进一步评估了 CTA，然后使用 Spearman 相关系数和线性回归，基于三个不同眼球轴的数据评估 CDVA 与 IOL 位移之间的相关性。
共评估了 46 例 46 只眼。参照 CTA、PA 和 LOS，IOL 偏心和倾斜的大部分朝向颞下方向。我们发现，CTA 和 PA 测量的水平子午线数据存在统计学差异（倾斜：p = 0.011；偏心：p = 0.005）。CTA 测量的 IOL 偏心颞下（r = -0.344，p = 0.035）和下侧（r = -0.336，p = 0.042）与 CDVA 呈显著负相关。PA 和 LOS 测量与任何指标均无相关性。
参照不同眼球轴评估 IOL 的倾斜和偏心度差异显著。参照 CTA 测量的 IOL 倾斜和偏心度与 CDVA 显著相关。
