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目的从EK的手术技巧,探讨上皮细胞的活性、上皮愈合的情况和术后Haze发生的关系。方法对行EK术的183人(356眼),观察术后摘取绷带片时上皮愈合情况和术后出现Haze的情况,计算出低中度近视组(<-6.00D)45眼和高度近视组(≥-6.00D)311眼的切削百分比和Haze的发生率。结果1)356眼中,术后UCVA达术前BSCVA占57.58%,超过术前BSCVA占38.76%,低于术前BSCVA占3.65%。2)低中度近视组的Haze的发生率为4.45%,切削百分比为13.411%;高度近视组Haze的发生率为8.038%,切削百分比为22.797%,两组比较有显著性差异(p<0.05)。3)术后摘片时上皮缺损的面积与术后出现Haze呈正相关(r=0.68)。上皮缺损为1级时,64%术后出现Ⅰ级Haze;上皮缺损达2～3级时,术后100%出现Ⅰ～Ⅱ级Haze。结论通过提高EK的手术技巧,充分保持上皮细胞的活性,可以降低术后Haze的发生率。
Objective To explore the relationship between epithelial cell activity, epithelial healing and postoperative Haze from the surgical techniques of EK. Methods Eighteen eyes (356 eyes) underwent EK surgery, observed the healing of the epithelium during the operation of the bandage and postoperative Haze, and calculated 45 eyes of low-moderate myopia group (<-6.00D) and high myopia Grouping (≥-6.00D) 311% cutting of the eye and incidence of Haze. Results 1) In 356 eyes, preoperative UCVA reached 57.58% preoperative BSCVA, accounting for 38.76% more than preoperative BSCVA and 3.65% lower than preoperative BSCVA. 2) The incidence of Haze in low and moderate myopia group was 4.45%, the cutting percentage was 13.411%; the incidence of Haze in high myopia group was 8.038% and the cutting percentage was 22.797%, there was a significant difference between the two groups (p <0.05 ). 3) There was a positive correlation between the area of epithelial defect and postoperative Haze after operation (r = 0.68). Grade I Haze was found in 64% of patients after epithelial defect was grade 1; Grade I ~ II Haze occurred in 100% of patients with grade 2 to 3 epithelial defects. Conclusion By improving the surgical skills of EK and fully maintaining the activity of epithelial cells, the incidence of postoperative Haze can be reduced.