Moon Sung Chur, Mohamed Tarek, Fine I Howard
Oregon Eye Institute, Eugene, Oregon 97401, USA.
Korean J Ophthalmol. 2007 Mar;21(1):1-5. doi: 10.3341/kjo.2007.21.1.1.
This study was performed to assess efficiency and stability of astigmatic change by incision size after cataract surgery.
This work was designed as a retrospective, comparative, nonrandomized interventional study. A total of 121 cases of cataract surgery were reviewed in 98 patients performed by one surgeon at the Oregon Eye Institute in Eugene, OR, USA with 3-year follow-ups. All procedures were performed with the temporal approach of self-sealing incisions. The serial change in surgically induced astigmatisms were examined in all cases of three groups: Group A, cartridge injection of a foldable IOL through a 2.5 mm self-sealing incision; Group B, cartridge injection of a foldable IOL through a 3.0 mm self-sealing incision; Group C, cartridge injection of a foldable IOL through a 3.5 mm self-sealing incision. Keratometric data were obtained preoperatively, and 3 weeks, 3 months, 6 months, 9 months, 12 months, 24 months and 36 months postoperatively. Polar value analysis was performed to calculate the surgically induced astigmatism.
The astigmatic change decreased over time in Group B (P<0.05). The other groups tended to remain in induced astigmatism. All groups showed anticlockwise torque at 3 weeks following surgery. Group B showed a decrease in deviation, but the other groups showed increases in their torque value at postoperative 12 months (P<0.05).
The 3.0 mm incision size correlated with the least surgically induced astigmatism.
本研究旨在评估白内障手术后散光变化随切口大小的效率和稳定性。
本研究设计为一项回顾性、对比性、非随机干预性研究。在美国俄勒冈州尤金市的俄勒冈眼科研究所，由一名外科医生对98例患者的121例白内障手术进行了回顾，并进行了3年的随访。所有手术均采用颞侧自闭式切口入路。对三组所有病例的手术诱导散光的连续变化进行了检查：A组，通过2.5毫米自闭式切口使用筒装注射植入折叠式人工晶状体；B组，通过3.0毫米自闭式切口使用筒装注射植入折叠式人工晶状体；C组，通过3.5毫米自闭式切口使用筒装注射植入折叠式人工晶状体。术前以及术后3周、3个月、6个月、9个月、12个月、24个月和36个月获取角膜曲率计数据。进行极差值分析以计算手术诱导散光。
B组散光变化随时间减少（P<0.05）。其他组的诱导散光倾向于保持稳定。所有组在术后3周均显示逆时针扭矩。B组偏差减小，但其他组在术后12个月扭矩值增加（P<0.05）。
3.0毫米切口大小与手术诱导散光最少相关。
