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目的 探讨角膜瓣蒂的不同位置对LASIK手术后角膜知觉的影响。方法 对 3 1名双眼屈光参差 <1 0D ,术前双眼角膜中央知觉相同的近视眼患者行LASIK手术 ,其中左眼角膜瓣蒂的位置在上方 ,右眼角膜瓣蒂的位置在鼻侧。应用CohetBonnet角膜知觉计分别测定术前、术后一周、二周和四周各眼的角膜中央的角膜知觉。结果 将术后一周、二周时左右眼的角膜知觉阈值进行配对t检验 ,其差异有显著性意义 (P <0 0 5 )。将术后四周左右眼的角膜知觉阈值进行配对t检验 ,其差异无显著性意义 (P >0 0 5 )。结论 角膜瓣蒂的位置不同对LASIK术后早期角膜知觉的影响也不同 ,在术后一周和二周时角膜瓣蒂的位置在上方的角膜知觉低于角膜瓣蒂的位置在鼻侧的角膜知觉 ,在术后四周时 ,随着角膜知觉的恢复双眼的角膜知觉已无显著性差异。
Objective To investigate the effect of different positions of corneal pedicle flap on corneal sensation after LASIK. Methods Thirty-one patients with myopic eyes whose corneal central vision was the same before surgery were enrolled in this study. The left corneal flap pedicle position was at the top and the right corneal flap pedicle position was at the nasal side. The Corneal sensation of the cornea of each eye before surgery, one week, two weeks and four weeks after surgery was measured by using a CohetBonnet corneal sensor. Results The corneal perceptual thresholds of one week and two weeks after operation were paired t test, the difference was significant (P <0 05). There was no significant difference between the two groups (P> 0.05). Conclusions The different position of corneal pedicle flap has different effects on early corneal sensation after LASIK. Corneal sensation at the position of corneal flap pedicle flap is lower than corneal flap pedicle position at the first and second week after operation At 4 weeks after surgery, there was no significant difference in corneal sensation with the recovery of corneal sensitivity in both eyes.