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首页> 美国卫生研究院文献>The British Journal of Ophthalmology >Comparison of corneal thickness measurements using Orbscan II non-contact specular microscopy and ultrasonic pachymetry in eyes after laser in situ keratomileusis
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Comparison of corneal thickness measurements using Orbscan II non-contact specular microscopy and ultrasonic pachymetry in eyes after laser in situ keratomileusis

机译：激光原位角膜磨镶术后使用Orbscan II非接触式镜面显微镜和超声测厚法测量角膜厚度的比较

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>Aims: To compare central corneal thickness measurements of three pachymetry devices in eyes after laser in situ keratomileusis (LASIK).>Methods: Central corneal thickness was measured in 203 eyes after myopic LASIK. Orbscan II scanning slit topography (Bausch & Lomb), SP-2000P non-contact specular microscopy (Topcon), and ultrasonic pachymetry (Tomey) were used in this sequence.>Results: Three devices gave significantly different corneal thickness readings (p<0.0001, repeated measure analysis of variance). The measurements of Orbscan II (445.6 (SD 60.0) μm) were significantly smaller than those of noncontact specular microscopy (467.9 (SD 40.2) μm; p<0.0001, Tukey multiple comparison) and ultrasonic pachymetry (478.8 (SD 41.9) μm; p<0.0001). The value obtained with SP-2000P non-contact specular microscopy was significantly smaller than that taken with ultrasonic pachymetry (p<0.001). There were significant linear correlations between scanning slit topography and non-contact specular microscopy (Pearson’s correlation coefficient r = 0.912, p<0.0001), non-contact specular microscopy and ultrasonic pachymetry (r = 0.968, p<0.0001), and ultrasonic pachymetry and scanning slit topography (r = 0.933, p<0.0001).>Conclusion: In post-LASIK eyes, Orbscan II scanning slit topography significantly underestimated corneal thickness. Non-contact specular microscopy gave smaller thickness readings than ultrasonic pachymetry, but these two units showed an excellent linear correlation.
机译：>目的：比较激光原位角膜磨镶术（LASIK）后三种测厚仪在眼睛中的中央角膜厚度测量结果。>方法：在近视LASIK术后203眼中测量中央角膜厚度。依次使用Orbscan II扫描狭缝形貌（Bausch＆Lomb），SP-2000P非接触式镜面显微镜（Topcon）和超声测厚仪（Tomey）。>结果：三种设备产生的角膜明显不同厚度读数（p <0.0001，重复测量方差分析）。 Orbscan II（445.6（SD 60.0）μm）的测量值显着小于非接触式镜检显微镜（467.9（SD 40.2）μm; p <0.0001，Tukey多次比较）和超声测厚法（478.8（SD 41.9）μm; p <0.0001）。 SP-2000P非接触式镜面显微镜获得的值明显小于超声测厚法（p <0.001）。扫描狭缝形貌与非接触式镜检显微镜（Pearson相关系数r = 0.912，p <0.0001），非接触式镜检显微镜和超声测厚法（r = 0.968，p <0.0001），超声测厚法之间存在显着的线性相关性。扫描狭缝形貌（r = 0.933，p <0.0001）。>结论：在LASIK术后眼睛中，Orbscan II扫描狭缝形貌显着低估了角膜厚度。非接触式镜面显微镜比超声波测厚仪具有更小的厚度读数，但是这两个单元显示出极好的线性相关性。

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