PDF(Pubmed)
Abstract：
BACKGROUND: Knowledge about refractive stabilization and the accuracy of postoperative refractive error measurements are crucial for improved patient outcomes after phacoemulsification. Existing guidelines typically recommend waiting 4-6 wk before prescribing corrective lenses. Our research focused on identifying factors that influence refractive errors in the early stages of post-cataract surgery, thus contributing to the existing literature on this topic.
OBJECTIVE: To investigate the time required for refraction stability after uneventful phacoemulsification surgery.
METHODS: We compared the variation and statistical significance of the difference in spherical, cylindrical components, and the spherical equivalent between the 1- and 6-wk follow-up period in a group of 257 eyes that underwent uneventful phacoemulsification with foldable intraocular lens implantation, all performed by a single experienced surgeon. The Wilcoxon-Signed Rank Test was utilized to assess the magnitude of the change and determine its statistical significance. The refractive stability was defined as the point at which the change in spherical equivalent was within ± 0.5 dioptres for two consecutive visits.
RESULTS: The average age of the patients was 64.9 ± 8.9 yr. The differences observed in both the visits in spherical power (0.1 ± 0.2), cylinder power (0.3 ± 0.4), and spherical equivalent (0.2 ± 0.2) were minimal and not statistically significant. The majority of eyes (93.4%) achieved refractive stability within 6 wk after the surgery. The cylindrical power differed between age groups at the 6th wk post-operative and the difference was statistically significant (P value 0.013). There were no significant differences in refractive stability when considering sex and axial length.
CONCLUSIONS: Phacoemulsification with foldable intraocular lens implantation results in no significant changes in refraction for the majority of cases during the 6-wk follow-up period. Therefore, a spectacle prescription can be given at the completion of 1 wk.
OBJECTIVE: To investigate the time required for refraction stability after uneventful phacoemulsification surgery.
METHODS: We compared the variation and statistical significance of the difference in spherical, cylindrical components, and the spherical equivalent between the 1- and 6-wk follow-up period in a group of 257 eyes that underwent uneventful phacoemulsification with foldable intraocular lens implantation, all performed by a single experienced surgeon. The Wilcoxon-Signed Rank Test was utilized to assess the magnitude of the change and determine its statistical significance. The refractive stability was defined as the point at which the change in spherical equivalent was within ± 0.5 dioptres for two consecutive visits.
RESULTS: The average age of the patients was 64.9 ± 8.9 yr. The differences observed in both the visits in spherical power (0.1 ± 0.2), cylinder power (0.3 ± 0.4), and spherical equivalent (0.2 ± 0.2) were minimal and not statistically significant. The majority of eyes (93.4%) achieved refractive stability within 6 wk after the surgery. The cylindrical power differed between age groups at the 6th wk post-operative and the difference was statistically significant (P value 0.013). There were no significant differences in refractive stability when considering sex and axial length.
CONCLUSIONS: Phacoemulsification with foldable intraocular lens implantation results in no significant changes in refraction for the majority of cases during the 6-wk follow-up period. Therefore, a spectacle prescription can be given at the completion of 1 wk.
摘要：
背景：了解屈光稳定性和术后屈光不正测量的准确性对于改善超声乳化术后患者的预后至关重要。现有指南通常建议在处方矫正镜片之前等待4-6周。我们的研究集中在确定影响白内障术后早期屈光不正的因素，从而有助于现有的有关这一主题的文献。
目的：研究顺利的超声乳化手术后屈光稳定所需的时间。
方法：我们比较了球形差异的变化和统计学意义，圆柱形元件,在一组257只眼睛中，在1周和6周的随访期之间进行了球形等效性，这些眼睛接受了可折叠的人工晶状体植入术，全部由一位经验丰富的外科医生完成。利用Wilcoxon-Signed秩检验来评估变化的幅度并确定其统计显著性。屈光稳定性定义为连续两次的球面当量变化在±0.5屈光度内的点。
结果：患者平均年龄为64.9±8.9岁。在两次访问中观察到的球面功率的差异（0.1±0.2），气缸功率(0.3±0.4),和球形当量（0.2±0.2）最小，无统计学意义。大多数眼睛（93.4％）在手术后6周内实现了屈光稳定性。术后第6周各年龄组的柱度数差异有统计学意义(P值0.013)。考虑性别和眼轴长度时，屈光稳定性没有显着差异。
结论：超声乳化联合折叠式人工晶状体植入术在6周随访期间，大多数病例的屈光度无明显变化。因此,可以在1周完成时给出眼镜处方。
目的：研究顺利的超声乳化手术后屈光稳定所需的时间。
方法：我们比较了球形差异的变化和统计学意义，圆柱形元件,在一组257只眼睛中，在1周和6周的随访期之间进行了球形等效性，这些眼睛接受了可折叠的人工晶状体植入术，全部由一位经验丰富的外科医生完成。利用Wilcoxon-Signed秩检验来评估变化的幅度并确定其统计显著性。屈光稳定性定义为连续两次的球面当量变化在±0.5屈光度内的点。
结果：患者平均年龄为64.9±8.9岁。在两次访问中观察到的球面功率的差异（0.1±0.2），气缸功率(0.3±0.4),和球形当量（0.2±0.2）最小，无统计学意义。大多数眼睛（93.4％）在手术后6周内实现了屈光稳定性。术后第6周各年龄组的柱度数差异有统计学意义(P值0.013)。考虑性别和眼轴长度时，屈光稳定性没有显着差异。
结论：超声乳化联合折叠式人工晶状体植入术在6周随访期间，大多数病例的屈光度无明显变化。因此,可以在1周完成时给出眼镜处方。
