Clinical evaluation of the Oculus Keratograph
Clinical evaluation of the Oculus Keratograph
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DOI：
10.1016/j.clae.2012.04.002
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发表时间：
2012-08-01
影响因子：
3.2
通讯作者：
Wolffsohn, J. S.
中科院分区：
文献类型：
--
作者：
Best, N.;Drury, L.;Wolffsohn, J. S.
目的：目的：探讨Oculus角膜曲率计测量角膜曲率和非侵入性泪膜破裂时间（NITBUT）的有效性和可靠性。然后用带有泪液膜扫描软件的角膜描记仪客观地测量NITBUT，并用Keeler泪液镜主观地测量NITBUT。重复角膜曲率仪测量的角膜曲率和NITBUT以检验可靠性。结果：角膜曲率计测量的角膜曲率比ARKT测量的角膜曲率更平坦（MSE差异：+1.83 +/-0.44D），但具有可重复性（p > 0.05）。角膜描记仪的NITBUT测量值显著低于使用泪液镜观察到的值（12.35 +/- 7.45 s：p < 0.001），并且在随后的测量中降低（-1.64 +/- 6.03 s; p < 0.01）。角膜描记仪测量的是眼泪在角膜上任何地方首次破裂的时间，63%的受试者患有NITBUT
Aim: To determine the validity and reliability of the measurement of corneal curvature and non-invasive tear break-up time (NITBUT) measures using the Oculus Keratograph.Method: One hundred eyes of 100 patients had their corneal curvature assessed with the Keratograph and the Nidek ARKT Tonorefll. NITBUT was then measured objectively with the Keratograph with Tear Film Scan software and subjectively with the Keeler Tearscope. The Keratograph measurements of corneal curvature and NITBUT were repeated to test reliability. The ocular sensitivity disease index questionnaire was completed to quantify ocular comfort.Results: The Keratograph consistently measured significantly flatter corneal curvatures than the ARKT (MSE difference: +1.83 +/- 0.44D), but was repeatable (p > 0.05). Keratograph NITBUT measurements were significantly lower than observation using the Tearscope (by 12.35 +/- 7.45 s: p < 0.001) and decreased on subsequent measurement (by -1.64 +/- 6.03 s; p < 0.01). The Keratograph measures the first time the tears break up anywhere on the cornea with 63% of subjects having NITBUTs