Results After surgery, refractive power on corneal anterior surface decreased significantly in peripheral zone at 1 week(P< 0.01).
结果巩膜环扎外加压术引起角膜前表面周边部术后1周屈光度显著减小（P<0.01）；
The air-tear fl1m lnterface isa powerful refractive surface. Small changes in the curvature can induce Iarge sh1fts in the refractive power.
空气·泪层的内面为一强折射层，较小的曲率变化就可以引起较大的屈光能力变化。
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