Domínguez-Vicent Alberto, Pérez-Vives Cari, Ferrer-Blasco Teresa, Albarrán-Diego César, Montés-Micó Robert
Optometry Research Group (GIO), Optics Department, University of Valencia, Spain.
Clin Exp Optom. 2015 May;98(3):254-62. doi: 10.1111/cxo.12247. Epub 2015 Mar 19.
The aim was to study the interchangeability of various devices that measure anterior chamber depth (ACD) and white-to-white (WTW) distance.
Eighty right eyes of eighty patients aged 20 to 40 years were included. Their spherical equivalent ranged from -4.25 to +1.00 dioptres. Each eye's ACD and the WTW distance were measured using the following devices: a Castroviejo surgical calliper, CA-200F Corneal Analyser, Orbscan II, Pentacam HR and IOLMaster 500.
The Pentacam HR measured significantly greater ACD (p < 0.01) than the other two devices, whereas IOLMaster 500 and Orbscan II yielded comparable (p > 0.01) distances. Nonetheless, in every device comparison, the mean difference was within clinically acceptable limits. The device comparison showed that for WTW distance measurements IOLMaster 500 yields the greatest value (p < 0.01), whereas CA-200F Corneal Analyser yields the smallest one (p < 0.01).
Pentacam HR, Orbscan II and IOLMaster 500 can be used interchangeably to measure ACD, whereas Orbscan II, IOLMaster 500, Castroviejo surgical calliper and CA-200F Corneal Analyser cannot be considered interchangeable, when it comes to measuring WTW distance.
本研究旨在探讨各种测量前房深度（ACD）和白对白（WTW）距离的设备之间的互换性。
纳入80例年龄在20至40岁之间患者的80只右眼。其等效球镜度范围为-4.25至+1.00屈光度。使用以下设备测量每只眼睛的ACD和WTW距离：卡斯特罗维霍手术卡尺、CA-200F角膜分析仪、Orbscan II、Pentacam HR和IOLMaster 500。
Pentacam HR测量的ACD显著大于其他两种设备（p<0.01），而IOLMaster 500和Orbscan II测量的距离相当（p>0.01）。尽管如此，在每一次设备比较中，平均差异均在临床可接受范围内。设备比较显示，对于WTW距离测量，IOLMaster 500测量值最大（p<0.01），而CA-200F角膜分析仪测量值最小（p<0.01）。
在测量ACD时，Pentacam HR、Orbscan II和IOLMaster 500可以互换使用；而在测量WTW距离时，Orbscan II、IOLMaster 500、卡斯特罗维霍手术卡尺和CA-200F角膜分析仪不能认为是可互换的。
