Salouti Ramin, Nowroozzadeh Mohammad H, Zamani Mohammad, Ghoreyshi Maryam, Salouti Rosa
Poostchi Ophthalmology Research Center, Shiraz University of Medical Sciences, Shiraz, Iran.
Clin Exp Optom. 2009 Sep;92(5):429-33. doi: 10.1111/j.1444-0938.2009.00407.x. Epub 2009 Jul 21.
White-to-white corneal measurement is used frequently in cataract and refractive surgery as well as in diagnosing various corneal diseases and monitoring congenital glaucoma. In this article, we determine agreement in horizontal corneal diameter measurements in normal eyes among the Galilei V4.01, the EyeSys and the Orbscan IIz.
In this prospective study, 37 consecutive volunteers were enrolled. All 74 eyes were measured with all three devices. Galilei, EyeSys and Orbscan II measurements were compared with one another. In addition, the data from the right and left eyes were compared for each device.
The mean horizontal corneal diameter measurements with the Galilei, the EyeSys and the Orbscan II were 12.01 +/- 0.61 mm, 12.09 +/- 0.87 mm and 11.67 +/- 0.29 mm, respectively. The difference between the Galilei and EyeSys systems was not statistically significant (p = 0.76), however, the Orbscan II showed smaller measurements (p < 0.001). The best 95% limits of agreement between devices were for the Galilei and the Orbscan II (-0.72, 1.48; r = 0.4, p < 0.01). The best 95% limits of agreement between two eyes for each device were found with the Orbscan II (-0.15, 0.17; r = 0.996, p < 0.01). There was no correlation between measurements of right and left eyes for the Galilei or the EyeSys (r = 0.274, p = 0.176 and r = 0.31, p = 0.065, respectively).
These results suggest that measurements made with the Orbscan II are smaller than those obtained with the EyeSys Corneal Analysis system and the Galilei. Among the three devices, the Galilei and the Orbscan II showed the best agreement, however, it is inadvisable to use the three devices interchangeably in every clinical situation.
白对白角膜测量在白内障手术、屈光手术以及各种角膜疾病的诊断和先天性青光眼的监测中经常使用。在本文中，我们确定了Galilei V4.01、EyeSys和Orbscan IIz在正常眼水平角膜直径测量中的一致性。
在这项前瞻性研究中，连续招募了37名志愿者。用这三种设备对所有74只眼睛进行测量。将Galilei、EyeSys和Orbscan II的测量结果相互比较。此外，还对每种设备的右眼和左眼数据进行了比较。
Galilei、EyeSys和Orbscan II测量的平均水平角膜直径分别为12.01±0.61mm、12.09±0.87mm和11.67±0.29mm。Galilei和EyeSys系统之间的差异无统计学意义（p = 0.76），然而，Orbscan II显示的测量值较小（p < 0.001）。设备之间最佳的95%一致性界限是Galilei和Orbscan II（-0.72，1.48；r = 0.4，p < 0.01）。每种设备两眼之间最佳的95%一致性界限是Orbscan II（-0.15，0.17；r = 0.996，p < 0.01）。Galilei或EyeSys的右眼和左眼测量值之间无相关性（分别为r = 0.274，p = 0.176和r = 0.31，p = 0.065）。
这些结果表明，Orbscan II的测量值小于EyeSys角膜分析系统和Galilei的测量值。在这三种设备中，Galilei和Orbscan II显示出最佳的一致性，然而，在每种临床情况下互换使用这三种设备是不可取的。
