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作 者:刘毅[1] Berthold Seitz Achim Langenbucher Nhung X.Nguyen Gottfried O.H.Naumann
机构地区:[1]北京同仁医院眼科中心,北京100730 [2]德国埃朗根-纽伦堡大学眼科
出 处:《中国实用眼科杂志》2007年第4期366-369,共4页Chinese Journal of Practical Ophthalmology
摘 要:目的分析圆锥角膜(KC)手术前后角膜规则程度的变化,以及角膜缝线拆除对角膜规则程度的影响,对激光穿透性角膜移植手术(PK)在KC治疗中的作用进行评价。方法回顾分析了236例圆锥角膜使用激光环钻技术进行的穿透性角膜移植手术手术,使用角膜曲率计(Ophthalmometer,Type-H,190071Zeiss,Jena,Germany)对手术前后的角膜规则程度进行检测,并结合所测出的角膜曲率(K)值和角膜映光图像分成4组:(0)规则组,K〈50D;(1)轻度不规则组,K〈60;(2)中度不规则组,K≥60;(3)重度不规则组,K值不能读出,共4组。手术后第12、18个月依次拆除连续缝线,并同时随访记录各组别角膜规则程度,动态分析以上三个时间点角膜规则程度的变化特点。结果在三个时间点,规则组比例的递增趋势为4%-37%-61%轻度不规则组的变化趋势为12%-51%-33‰中度不规则组的递减趋势为38%-10%-4%;重度不规则组的变化趋势为46%-2%-2%。结论使用激光环钻和16针双线连续缝合的圆锥角膜手术病例中,穿透性角膜移植手术能有效改善病人的角膜表面规则程度,与缝线拆除相关的角膜规则程度呈动态变化,该变化主要发生在轻、中度组,缝线拆除本身并不会导致术后角膜规则程度下降。Objective To analyze the corneal regularity of pre- and post-surgery in keratocunus and the effect of suture removal on corneal regularity. Metholds 236 patients were performed penetrating keratoplasty, in which laser trephination technique was applied. Patients were assigned to four groups: (0) K〈50D, regular mire; (1) K〈60, mildly irregular mire; (2) K〉60, moderately irregular mire; (3) severe irregular, immeasurable mire based on the keratometry value and mires measured with semi-quantitative Ophthalmometer (Type-H, 190071 Zeiss, Jena, Germany). Subsequent suture removals were performed 12 and 18 months later, while corneal regularity measurements were followed up and evaluated. Results Upon the time point of measured, the proportion of each group showed alternative tendency as: group (0), 4%-37%-61%; group (1), 12%-51%- 33%; group (2), 38%-10%-4%; group (3), 46%-2%-2%. Conclusions Penetrating keratoplasty with laser trephination and 16 bites double-running suturing techniques can improve the corneal regularity of keratoconus, suture removal can not lead to an increase of corneal irregularity.
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