三种光学测量仪器与A超对近视眼中央角膜厚度测量的对比研究  被引量:9

Comparison of central corneal thickness measured by three optical measurement devices with ultrasound pachymetry

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作  者:彭铎[1] 王勤美[2] 陈世豪[2] 

机构地区:[1]中国江苏省苏州市立医院眼科,215002 [2]温州医科大学附属温州眼视光医院,中国浙江省温州市325027

出  处:《国际眼科杂志》2013年第12期2545-2548,共4页International Eye Science

摘  要:目的:探讨眼前段光学相干断层扫描仪( Visante OCT )、裂隙灯型眼前段光学相干断层扫描仪( SL-OCT )、OrbscanⅡz角膜地形图/角膜测厚系统( OrbscanⅡz)和A型超声测量仪测量近视人群中央角膜厚度( central corneal thickness ,CCT)的差异及相关性,以评价三种光学测量仪器在测量中央角膜厚度的准确性,为其临床应用提供依据。 方法:对近视患者43例86眼分别用Visante OCT、SL-OCT、OrbscanⅡz和A型超声测量仪进行CCT的测量,并对四种仪器测量的CCT值采用单因素方差分析, LSD-t法两两比较,Pearson相关分析。 结果:Visante OCT、SL-OCT、OrbscanⅡz和A型超声测量仪测量 CCT 的平均值分别为(521.05±29.88)μm、(533.73±31.83)μm、(534.02±32.96)μm、(540.60±31.11)μm,95%可信区间分别为(514.57~527.54),(526.83~540.65),(533.85~547.35),(536.75~544.45)。 Visante OCT 与SL-OCT(P=0.009)、A型超声测量仪(P<0.01)、OrbscanⅡz(P=0.008)的CCT测量值差异均有统计学意义。 Visante OCT 的CCT测量值分别低于SL-OCT的CCT测量值(12.69±9.32)μm,低于A型超声测量仪的 CCT 测量值(19.55±8.64)μm,低于OrbscanⅡz的CCT测量值(12.96±12.21)μm。 SL-OCT与A型超声测量仪( P=0.158)、OrbscanⅡz ( P=0.954)的CCT测量值差异均无统计学意义。 OrbscanⅡz与A型超声测量仪的 CCT 测量值差异无统计学意义( P=0.176)。四种方法CCT测量值均呈正相关( P<0.01)。 结论:三种光学测量仪器测量CCT值与A超测量值均有很好的相关性。 OrbscanⅡz和SL-OCT测量CCT值与A超的测量值基本一致。三种光学测量仪器与A超相比具有非接触性、无创性、测量时间短等特点,更易被患者接受。AIM:To compare the difference and correlation of central corneal thickness ( CCT ) measured by Zeiss Visante Anterior Segment Optical Coherence Tomography ( Visante OCT ) , Heidelberg Slit -Lamp Anterior Segment Optical Coherence Tomography ( SL-OCT) , OrbscanⅡz Computerized Topography ( OrbscanⅡz ) and A-mode ultrasound pachymetry. METHODS:Forty-three patients with myopia (86 eyes) were included. Sequential measurements of CCT was performed by the same operator with two different anterior segment OCT devices ( VisanteTM , Carl Zeiss, Meditec and Heidelberg EngineeringTM ), OrbscanⅡz Computerized Topography ( Bausch and Lomb IncTM ) and A-mode ultrasound pachymetry.The consistency of measurements was statistically analyzed by one-way ANOVA and LSD pair-wise comparisons.The differences were analyzed by Pearson correlation coefficients. RESULTS:The average CCT measured by Visante OCT, SL -OCT, Orbscan Ⅱ z, and A -mode ultrasound pachymetry were (521.05 ±29.88)μm, (533.73 ±31.83)μm, (534.02 ±32.96 )μm, and ( 540.60 ±31.11 )μm, the 95%confidence interval were (514.57 ~527.54), (526.83 ~540.65), (533.85~547.35), (536.75~544.45).There was statistically significant difference of CCT between using of Visante OCT and SL-OCT ( P =0.009 ). There was statistically significant difference of CCT using of Visante OCT and A-mode ultrasound pachymetry ( P〈0.01 ), OrbscanⅡ z ( P =0.008 ). The Visante OCT CCT measurements was significantly less than CCT with SL-OCT ( 12.69 ±9.32 ) μm. Compare with A -mode ultrasound pachymetry and OrbscanⅡz, the Visante OCT measurements significantly underestimated central corneal thickness by a mean of ( 19.55 ±8.64 )μm and (12.96±12.21)μm.There was no significant difference of CCT between using of SL-OCT and A-mode ultrasound pachymetry (P=0.158), OrbscanⅡz (P=0.954).There was no significant difference of CCT between using of OrbscanⅡz and A-mode ultrasound pachyme

关 键 词:眼前段光学相干断层扫描仪 裂隙灯型眼前段 光学相干断层扫描仪 OrbscanⅡz角膜地形图 角膜测厚系统 A型超声测量仪 中央角膜厚度 

分 类 号:R778.11[医药卫生—眼科]

 

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