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[摘要]
目的:比较WaveScan和OPD-Scan Ⅲ像差仪在测量屈光不正度数方面与主觉验光结果之间的差异。
方法:选取2013-01/12来我院激光治疗中心进行近视矫正的患者76例152眼,所有患者先后采用综合验光仪(NIDEK, RT-5 100)进行主觉验光,WaveScan(AMO Company,USA)和OPD-Scan Ⅲ像差仪(Nidek Technologies,Japan)进行客观验光检查。对这三种方法验光结果的球镜、柱镜及轴位进行统计学分析与比较。
结果:WaveScan验光的球镜度数较主觉验光结果偏低,差值0.13±0.30D(t=3.753, P<0.001),柱镜结果偏高0.13±0.43D(t=3.664, P<0.001)。OPD-Scan Ⅲ与主觉验光球镜、柱镜及等效球镜之间的差异均无统计学意义(P>0.05)。WaveScan与主觉验光轴位度数平均相差5.87°±6.19°,OPD-ScanⅢ与主觉验光平均相差3.82°±3.95°,两者之间的差异有统计学意义(t=2.817,P=0.006)。
结论:WaveScan与主觉验光球镜及柱镜结果之间有差异,OPD-Scan Ⅲ作为最新的综合设备,在验光度数上有较高的准确性。
[Key word]
[Abstract]
AIM: To compare the refractive errors measured by the VISX WaveScan, OPD-Scan Ⅲ and the subjective refraction.
METHODS: Seventy-six patients(152 eyes)were recruited from January 2013 to December 2013. All patients were measured with subjective refraction by the phoropter(NIDEK, RT-5 100), objective refraction by the WaveScan(AMO Company, USA), OPD-Scan Ⅲ(Nidek Technologies, Japan). The sphere, cylinder, axis of the three methods were compared and analyzed.
RESULTS: The sphere measured by WaveScan was lower than that by subjective refraction, the difference was 0.13±0.30D(t=3.753, P<0.001). For cylinder, the difference was 0.13±0.43D(t=3.664, P<0.001). There was no significance for sphere, cylinder, and spherical equivalent between OPD-Scan Ⅲ and subjective refraction(P>0.05). The value of the difference between WaveScan and subjective refraction was 5.87°±6.19° for the axis and the difference between OPD-Scan Ⅲ and subjective refraction was 3.82°±3.95°. There was statistic significance(t=2.817, P=0.006).
CONCLUSION: For sphere and cylinder,WaveScan generated some deviation relative to subjective refraction. The Nidek OPD-Scan Ⅲ gives more accurate measures of objective refraction when compared with subjective refraction.
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