School of Ophthalmology and Optometry, Eye Hospital, Wenzhou Medical University, Wenzhou, Zhejiang, China.
Sci Rep. 2017 Nov 1;7(1):14852. doi: 10.1038/s41598-017-14171-9.
Accurate intraocular lens (IOL) power calculation is always a challenge in ophthalmology, and unoptimized process may lead to inaccurate refractive outcomes. Quality control circle (QCC) has shown its success in many fields as a process management tool. However, its efficacy in ophthalmology remains unclear. Here we utilized the QCC method to optimize the process and evaluate its efficacy in improving the accuracy of IOL power calculation. After the QCC application, the percentage of eyes with achieved refractive outcomes within 0.5 diopter significantly increased from 63.2% to 80.8% calculated by Haigis formula and 59.2% to 75.8% by SRK/T formula in patients with normal axial length (AL) (22 mm ≤ AL < 26 mm). Although there were no statistically significant differences in patients with long AL by the two formulas (p = 0.886 and 0.726), we achieved an accuracy of 75% with the application of the PhacoOptics software, which was significantly higher than that using the other two formulas (p < 0.001). Our findings indicated that QCC optimized and standardized the process of IOL power calculation, thus improved the accuracy of IOL power calculation in patients who underwent cataract surgery.
准确的眼内人工晶状体（IOL）屈光力计算一直是眼科学的挑战，未优化的流程可能导致不准确的屈光结果。品管圈（QCC）已作为一种流程管理工具在许多领域取得了成功。然而，其在眼科的疗效尚不清楚。在这里，我们利用 QCC 方法优化流程，并评估其在提高 IOL 屈光力计算准确性方面的疗效。在 QCC 应用后，对于眼轴长度（AL）正常（22mm≤AL<26mm）的患者，使用 Haigis 公式计算的屈光结果达到目标值（相差 0.5 屈光度）的眼数百分比从 63.2%显著增加到 80.8%，使用 SRK/T 公式的从 59.2%增加到 75.8%。虽然对于长眼轴患者（AL>26mm），两种公式之间没有统计学上的显著差异（p=0.886 和 0.726），但是我们使用 PhacoOptics 软件获得了 75%的准确性，显著高于使用其他两种公式的准确性（p<0.001）。我们的研究结果表明，QCC 优化和标准化了 IOL 屈光力计算流程，从而提高了白内障手术患者的 IOL 屈光力计算准确性。
