Laursen Jonas Vejvad Nørskov, Jeppesen Peter, Olsen Thomas
Department of Ophthalmology, Aarhus University Hospital, Aarhus C, Denmark.
, Skovvejen 87, 8000, Aarhus C, Denmark.
Int Ophthalmol. 2016 Feb;36(1):17-20. doi: 10.1007/s10792-015-0069-3. Epub 2015 Mar 29.
To compare the precision among currently available keratometry devices. The corneal power was measured on two separate visits with the Nidek TonoRef II Autorefractor/Keratometer, the Zeiss IOLMaster 500, the Haag-Streit Lenstar LS 900, the Oculus Pentacam, and the Oculus Keratograph 4M. The precision was evaluated as the mean absolute intersession difference (MAD) between the corneal power measurements for each patient. Only the non-operated eye was included in the study. The Keratograph was found to have the highest MAD (0.215 D), which was significantly different from the other devices except for the IOLMaster. Nidek ARK had the lowest MAD (0.097 D), but this was not significant compared to Pentacam (0.124 D), Lenstar (0.132 D), or IOLMaster (0.140 D). Only one out of 29 patients had a precision difference exceeding 0.25 D with the Nidek ARK. Among the devices studied, the Nidek ARK was found to have the highest and the Keratograph was found to have to the lowest precision for the measurement of corneal power.
比较当前可用角膜曲率计设备之间的精度。使用尼德克TonoRef II自动验光仪/角膜曲率计、蔡司IOLMaster 500、哈格-施特赖特Lenstar LS 900、欧科路Pentacam和欧科路角膜地形图仪4M在两次单独的检查中测量角膜屈光力。精度评估为每位患者角膜屈光力测量值之间的平均绝对检查间差异（MAD）。研究仅纳入未手术眼。发现角膜地形图仪的MAD最高（0.215 D），除IOLMaster外，与其他设备相比差异有统计学意义。尼德克ARK的MAD最低（0.097 D），但与Pentacam（0.124 D）、Lenstar（0.132 D）或IOLMaster（0.140 D）相比无显著差异。29例患者中只有1例使用尼德克ARK时精度差异超过0.25 D。在所研究的设备中，发现尼德克ARK测量角膜屈光力的精度最高，而角膜地形图仪的精度最低。
