Binder P S
Ophthalmology Research Laboratory, Sharp Cabrillo Hospital, San Diego, CA 92110.
CLAO J. 1989 Jul-Sep;15(3):201-6.
Keratometry readings obtained with a standard Bausch & Lomb keratometer were compared to readings obtained with a Humphrey automated keratometer in 50 eyes that had undergone radial keratotomy and 40 eyes that had undergone corneal transplantation. Both instruments recorded similar results for the flat, steep, and mean keratometry meridians, but they produced significantly different results in determination of keratometry-measured astigmatism and axis of astigmatism. Differences in readings were greater (with the automated keratometer recording more astigmatism than the Bausch & Lomb keratometer) following corneal transplantation than radial keratotomy. It is suggested that only one or the other instrument be used for a clinical study because of the potential differences that can occur when measuring postsurgical astigmatism.
在50只接受了放射状角膜切开术的眼睛和40只接受了角膜移植的眼睛中，将使用标准的博士伦角膜曲率计获得的角膜曲率测量读数与使用汉弗莱自动角膜曲率计获得的读数进行比较。两种仪器在平坦、陡峭和平均角膜曲率子午线上记录的结果相似，但在测定角膜曲率测量的散光和散光轴时产生了显著不同的结果。角膜移植后读数的差异比放射状角膜切开术后更大（自动角膜曲率计记录的散光比博士伦角膜曲率计更多）。由于在测量术后散光时可能出现潜在差异，建议在临床研究中仅使用其中一种仪器。
