两种人工晶体计算公式预测闭角型青光眼合并白内障患者超声乳化手术后屈光度准确性的比较

doi:10.6040/j.issn.1673-3770.0.2017.512

摘要/Abstract

摘要： 目的比较闭角型青光眼(ACG)合并白内障患者行白内障超声乳化联合人工晶状体植入术两种人工晶体测算公式预测术后屈光度准确性。方法前瞻性系列病例研究。观察2017年1月至2017年8月在行白内障手术的房角关闭≤180°的ACG并白内障患者46 例(46眼)术前、术后3个月的视力,眼压、最佳矫正视力、中央前房深度的变化情况,记录术前SRK-T与Haigis公式各自预测术后屈光度数、术后实际屈光度数,预期术后屈光度数与术后等效球镜差值的绝对值记为绝对屈光误差值(ME),比较两种公式ME。结果术后3个月46眼与术前相比视力及最佳矫正视力提高,眼压下降,中央前房深度明显加深,且差异均有统计学意义(t=-3.98~-10.14, P≤0.01)。受检眼术后残余屈光度为-0.79±0.45 D,SRK-T公式术前预期屈光度为-0.89±0.17 D,其ME为0.34±0.27 D;Haigis公式术前预期屈光度为-1.01±1.04 D,其ME为0.65±0.48 D。两组间ME的差异有统计学意义(t=-4.05, P<0.05)。AL与SRK-T 公式ME呈显著负相关性(r=-0.64, P≤0.01),而与Haigis公式ME无显著相关性(r=-0.09, P>0.05)。结论对于ACG合并白内障患者行白内障超声乳化联合人工晶状体植入术是安全有效的;对此类患者选择SRK-T人工晶体测算公式术后屈光度准确性可能更高。

关键词: 白内障超声乳化术, 人工晶体测算公式, 屈光误差, 青光眼, 闭角型

Abstract: Objective This study compared the SRK-T and Haigis intraocular lens(IOL)measurement formulas for prediction of accuracy in angle closure glaucoma(ACG)combined with cataract. Methods This prospective study of 46 patients(46 eyes)with ACG was performed between January and August 2017. All patients underwent vision, best corrected visual acuity(BCVA), intraocular pressure(IOP), and central anterior chamber depth(ACD)testing, with subsequent phacoemulsification and cataract extraction with IOL implantation. We used two IOL measurement formulas for prediction of postoperative refraction accuracy and compared the mean absolute refractive error(ME)of the two formulas. Results The differences in vision, BCVA, IOP, and ACD were statistically significant(all P<0.01). The ME using the SRK-T formula was significantly smaller than the ME using the Haigis formula(P<0.05). The AL was negatively correlated with the ME measured with the SRK-T formula and showed no significant correlation with the ME measured with the Haigis formula. Conclusion Simple phacoemulsification and cataract extraction with IOL implantation is effective for ACG. The SRK-T formula showed greater predictive accuracy in the ACG group.

Key words: Angle closure, Phacoemulsification, Refractive error, Glaucoma, Intraocular lens measurement formula

中图分类号:

R775

高雪,郝琳琳,刘少华,张晗. 两种人工晶体计算公式预测闭角型青光眼合并白内障患者超声乳化手术后屈光度准确性的比较[J]. 山东大学耳鼻喉眼学报, 2018, 32(1): 68-71.

GAO Xue, HAO Linlin, LIU Shaohua, ZHANG Han. Comparison of two intraocular lens measurement formulas for prediction of postoperative refraction accuracy in patients with angle closure glaucoma and cataract[J]. JOURNAL OF SHANDONG UNIVERSITY (OTOLARYNGOLOGY AND OPHTHALMOLOGY), 2018, 32(1): 68-71.

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