矢量分析法评价眼内散光对飞秒激光LASIK治疗散光的影响

发布时间：2018-08-14 17:17

【摘要】：目的应用矢量分析法评价眼内散光(ocular residual astigmatism,ORA)对飞秒激光LASIK治疗散光的影响。方法收集2016年1月至4月在我院行飞秒激光LASIK的患者182例。应用矢量分析法计算ORA,ORA大于等于散光的为高眼内散光组(high ocular residual astigmatism group,HORAG),反之则为低眼内散光组(low ocular residual astigmatism group,LORAG)。术后随访6个月,比较两组裸眼视力以及散光矫正率和误差率。结果术前所有患者ORA为(0.61±0.27)D,其中超过0.75D者58例(31.9%);HORAG患者的ORA大于LORAG患者,两组差异有统计学意义(P0.05)。术后6个月HORAG患者裸眼视力为1.06±0.15,LORAG患者裸眼视力为1.08±0.15,两组差异无统计学意义(t=0.97、P=0.35);HORAG误差率(58.11±63.23)%大于LORAG(26.12±35.37)%,两组差异有统计学意义(t=3.43、P0.05);HORAG矫正率(146.45±86.63)%较LORAG(122.56±36.31)%大,两组差异有统计学意义(t=2.81、P0.05)。结论ORA较大时增加飞秒激光LASIK治疗散光的误差率,影响散光矫正率,进行屈光手术前应进行散光来源分析。
[Abstract]:Objective to evaluate the effect of intraocular astigmatism (ocular residual (Ora) on the treatment of astigmatism by femtosecond laser LASIK. Methods 182 cases of femtosecond laser LASIK in our hospital from January to April 2016 were collected. Vector analysis was used to calculate the value of Ora in high intraocular astigmatism group (high ocular residual astigmatism group) and low intraocular astigmatism group (low ocular residual astigmatism group LORAG). After 6 months follow-up, the naked visual acuity, astigmatism correction rate and error rate were compared between the two groups. Results the ORA of all patients before operation was (0.61 卤0.27) D.The ORA of 58 patients (31.9%) with ORA over 0.75D was higher than that of LORAG patients, and the difference between the two groups was statistically significant (P0.05). Six months after operation, the naked visual acuity of HORAG patients was 1.08 卤0.15. There was no significant difference between the two groups (t 0.97). The error rate of HORAG (58.11 卤63.23)% was higher than that of LORAG (26.12 卤35.37). There was significant difference between the two groups (146.45 卤86.63% vs LORAG (122.56 卤36.31)%). Conclusion when ORA is larger, the error rate of femtosecond laser LASIK in the treatment of astigmatism is increased, and the correction rate of astigmatism is affected. The source of astigmatism should be analyzed before refractive surgery.
【作者单位】：河北省眼科医院河北省眼科研究所河北省眼科学重点实验室;
【分类号】：R779.63

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