Samuelson S W, Koch D D, Kuglen C C
Cullen Eye Institute, Baylor College of Medicine, Houston, TX 77030.
Ophthalmic Surg. 1991 Apr;22(4):204-7.
We studied induced astigmatism in cadaver eyes to determine how small a limbal incision must be to avoid a long-term corneal flattening induced by limbal incisions along the meridian of the incision. We performed scleral pocket incisions (2.0 to 5.5 mm in 0.5-mm increments) on 12 fresh human cadaver globes, recessing the incisions 0.5 mm to simulate the natural wound sliding that causes corneal flattening. We found that with increasing incision length there was a nearly linear increase in corneal flattening. The maximal incision length that minimized induction of corneal flattening in excess of 0.25 diopters was 3.0 mm.
我们在尸体眼上研究诱导性散光，以确定角膜缘切口必须多小才能避免沿切口子午线的角膜缘切口引起的长期角膜扁平化。我们在12个新鲜的人类尸体眼球上进行了巩膜袋切口（2.0至5.5毫米，以0.5毫米为增量），将切口后退0.5毫米以模拟导致角膜扁平化的自然伤口滑动。我们发现，随着切口长度增加，角膜扁平化几乎呈线性增加。使角膜扁平化超过0.25屈光度的诱导最小化的最大切口长度为3.0毫米。
