Bergmann M T, Koch D D, Zeiter J H
Cullen Eye Institute, Baylor College of Medicine, Houston, Texas 77030.
Ophthalmic Surg. 1988 Apr;19(4):259-62.
We studied the effect of scleral cautery on corneal astigmatism in 20 cadaver eyes using the Zeiss wetfield bipolar cautery either at or 2 mm posterior to the corneoscleral limbus. The chord of cauterized area was set at either 5.5 or 11 mm. Cautery induced net corneal steepening along the meridian of the cauterized area, and induced the greatest astigmatism when applied at the limbus. At each location the 11-mm cautery application induced less astigmatism. The majority of the astigmatic change occurred within the first 5 to 10 seconds of application. We found that scleral cautery at or 2 mm posterior to the limbus can induce extensive corneal astigmatism.
我们使用蔡司湿场双极电灼器，在角膜缘处或角膜缘后2毫米处，对20只尸体眼研究了巩膜电灼对角膜散光的影响。电灼区域的弦长设定为5.5毫米或11毫米。电灼沿着电灼区域的子午线引起角膜净变陡，并在角膜缘处进行电灼时引起最大散光。在每个位置，应用11毫米电灼引起的散光较小。大部分散光变化发生在应用的最初5至10秒内。我们发现，在角膜缘处或角膜缘后2毫米处进行巩膜电灼可引起广泛的角膜散光。
