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目的研究针对高度近视眼的白内障患者更有效的术前人工晶状体屈光度计算及处理方法。方法选取2016年2月至2017年2月我院收治的高度近视合并白内障患者120例。根据随机数字表法均分为两组,每组60例。对照组采用触式A型超声仪结合第2代理论公式对人工晶状体屈光度进行计算。观察组采用非接触式光学相干生物测量仪结合SRK/T公式对人工晶状体屈光度进行计算。分别对比两组术前眼轴长度与角膜曲率,术后3个月屈光度术前估计值与术后实际值差值情况、视力分布情况,患者满意度以及不适主诉发生率。结果同一检测方式测量两组患者眼轴长度和角膜曲率差异无统计学意义(均P>0.05),具有可比性。且两组患者IOL-Master测量眼轴长度以及角膜曲率均高于A型超声测量结果,差异均有统计学意义(均P<0.05)。观察组患者屈光度术前估计值与术后实际值差值明显低于对照组,视力明显优于对照组,差异均有统计学意义(均P<0.01)。术后3个月观察组患者满意度为96.67%(58/60),显著高于对照组的85.00%(51/60),差异有统计学意义(P<0.05)。结论采用非接触式光学相干生物测量仪器并联合SRK/T公式对高度近视眼白内障患者进行术前测量及计算目标屈光度,测量误差较小,可显著提高患者满意度。
Objective To study the more effective preoperative intraocular lens diopter calculation and treatment for cataract patients with high myopia. Methods 120 patients with high myopia and cataract admitted in our hospital from February 2016 to February 2017 were selected. According to random number table are divided into two groups, each group 60 cases. In the control group, the refractive power of intraocular lens was calculated by using the touch type A ultrasound combined with the second generation theoretical formula. The observation group used non-contact optical coherence bio-measuring instrument combined with SRK / T formula to calculate intraocular lens refraction. The axial length and corneal curvature were compared between the two groups before operation, the difference between preoperative estimated value and postoperative actual value at 3 months after operation, the distribution of visual acuity, patient satisfaction and the incidence of complaints of discomfort. Results There was no significant difference in axial length and corneal curvature between the two groups (all P> 0.05). The lengths of axial length and corneal curvature measured by IOL-Master in both groups were higher than those of type A ultrasound. The differences were statistically significant (both P <0.05). The difference between preoperative estimated value and postoperative actual value in observation group was significantly lower than that in control group, and visual acuity was significantly better than that in control group (all P <0.01). The satisfaction degree of the observation group was 96.67% (58/60) at 3 months after operation, which was significantly higher than that of the control group (85.00%, 51/60). The difference was statistically significant (P <0.05). Conclusion Non-contact optical coherence biometry instrument combined with SRK / T formula for high myopia cataract patients preoperative measurement and calculation of the target refractive error, the measurement error is small, can significantly improve patient satisfaction.