四种人工晶状体计算公式在超高度近视并发白内障患者中的应用

Application of four intraocular lens calculation formulas in patients with super-high myopia complicated with cataract

摘要:

目的：评估SRK/T、Haigis、Barrett Universal Ⅱ、Wang-Koch修正SRK/T公式在超高度近视并发白内障手术中应用的准确性。方法：收集2020-01/2021-06于我院行白内障超声乳化+张力环植入联合人工晶状体植入术的超高度近视并发白内障患者44例52眼，术前采用SRK/T、Haigis、Barrett Universal Ⅱ公式及Wang-Koch修正SRK/T公式分别计算术后预留屈光度，术后3mo进行综合验光测量实际屈光度。获得四种公式的平均绝对屈光误差(MAE)，评价各公式的准确性。结果：SRK/T公式、Haigis公式、Barrett Universal Ⅱ公式、Wang-Koch修正SRK/T公式MAE分别为0.86(0.56，1.20)、0.79(0.56，1.16)、0.68(0.30，0.87)、0.65(0.43，0.75)D，其中SRK/T公式和Haigis公式MAE均显著高于Barrett Universal Ⅱ公式和Wang-Koch修正SRK/T公式(P<0.01)。根据术前角膜曲率(K)将纳入患者分为K>46D组(12眼)、44D<K≤46D组(24眼)、K≤44D组(16眼)，三组患者SRK/T公式和Haigis公式MAE均显著高于Barrett Universal Ⅱ公式和Wang-Koch修正SRK/T公式(P<0.01)。根据术前眼轴长度(AL)将纳入患者分为AL≤30mm组(24眼)、AL>30mm(28眼)组，两组患者SRK/T公式和Haigis公式MAE均显著高于Barrett Universal Ⅱ公式和Wang-Koch修正SRK/T公式(P<0.05)。结论：采用Wang-Koch修正SRK/T公式和Barrett Universal Ⅱ公式预测超高度近视并发白内障患者人工晶状体度数准确性更高。

Abstract:

AIM: To evaluate the accuracy of SRK/T, Haigis, Barrett Universal II and Wang-Koch modified SRK/T formula in the operation of cataract complicated by super-high myopia.METHODS: A total of 44 cases(52 eyes)with super-high myopia complicated with cataract who underwent phacoemulsification with tension ring implantation combined with intraocular lens implantation in our hospital from January 2020 to June 2021 were collected. SRK/T, Haigis, Barrett Universal Ⅱ formula and Wang-Koch modified SRK/T formula were used to calculate the postoperative reserved diopter before surgery, and the actual diopter was measured by comprehensive optometry at 3mo after surgery. The mean absolute refractive error(MAE)of four formulas was obtained to evaluate the accuracy of the calculation formula.RESULTS: The MAE of SRK/T formula, Haigis formula, Barrett Universal Ⅱ formula and Wang-Koch modified SRK/T formula were 0.86(0.56, 1.20), 0.79(0.56, 1.16), 0.68(0.30, 0.87), 0.65(0.43, 0.75)D, respectively, and MAE of SRK/T formula and Haigis formula were significantly higher than those of Barrett Universal Ⅱ formula and Wang-Koch modified SRK/T formula(P<0.01). According to preoperative corneal curvature(K), enrolled patients were divided into K >46D group(12 eyes), 44D< K ≤46D group(24 eyes), and K ≤44D group(16 eyes). The MAE of SRK/T formula and Haigis formula were significantly higher than those of Barrett Universal Ⅱ formula and Wang-Koch modified SRK/T formula in the three groups(P<0.01). According to preoperative axial length(AL), patients were divided into AL ≤30 mm group(24 eyes)and AL >30mm group(28 eyes). The MAE of SRK/T formula and Haigis formula in two groups were significantly higher than those of Barrett Universal Ⅱ formula and Wang-Koch modified SRK/T formula(P<0.05).CONCLUSIONS: Wang-Koch modified SRK/T formula and Barrett Universal Ⅱ formula are more accurate in predicting the degree of intraocular lens in patients with super-high myopia complicated with cataract.