北京协和医院:近视手术余留角膜“变废为宝”守光明

2018-06-12 林苗苗侠克 新华社

记者近日从北京协和医院获悉,该院率先将激光近视手术中切下取出的余留角膜材料“变废为宝”,用于角膜病患者的角膜移植,三年多来已完成几十例手术,且目前未发生排异反应,为拓宽角膜移植供体来源、缓解角膜供体不足提供了新思路。据了解,因缺乏角膜材料,很多角膜溃疡患者以往只能采用很薄的生物羊膜堵住创面。自2014年起,北京协和医院眼科教授李莹团队率先将全飞秒激光近视手术(SMILE)取出的角膜材料用于角膜移植

记者近日从北京协和医院获悉,该院率先将激光近视手术中切下取出的余留角膜材料“变废为宝”,用于角膜病患者的角膜移植,三年多来已完成几十例手术,且目前未发生排异反应,为拓宽角膜移植供体来源、缓解角膜供体不足提供了新思路。

据了解,因缺乏角膜材料,很多角膜溃疡患者以往只能采用很薄的生物羊膜堵住创面。自2014年起,北京协和医院眼科教授李莹团队率先将全飞秒激光近视手术(SMILE)取出的角膜材料用于角膜移植,开展只对患者角膜病损部位进行板层移植的整复性角膜移植手术,虽因植片小加大了缝合难度,但更好地保持了眼球的完整性,患者术后视觉功能稳定。

此外,与常规角膜移植手术相比,由于只对小面积病损角膜“打补丁”,三年来采用全飞秒激光近视手术余留角膜进行移植的几十例手术都未发生排异反应,且手术费用、角膜保存成本较低。

李莹认为,目前国内有上百家医院开展了全飞秒激光近视手术,在健康角膜提供者知情同意的前提下,可为整复性角膜移植手术提供大量材料。因此这项技术有望拓宽角膜移植供体的来源,缩短部分急需角膜移植患者的等待时间,使广大角膜病患者获益。

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    2018-06-14 snowpeakxu
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