AIM: To compare the anterior segment measurements obtained by rotating Scheimpflug camera(Pentacam) and Scanning-slit topography(Orbscan IIz) in keratoconic eyes.METHODS: A total of 121 patients, 71 males(58.7%)and 50...AIM: To compare the anterior segment measurements obtained by rotating Scheimpflug camera(Pentacam) and Scanning-slit topography(Orbscan IIz) in keratoconic eyes.METHODS: A total of 121 patients, 71 males(58.7%)and 50 females(41.3%)(214 eyes) with the diagnosis of keratoconus(KC) were enrolled in this study. Following diagnosis of KC by slit-lamp biomicroscopic examination, central corneal thickness(CCT), thinnest corneal thickness(TCT), anterior chamber depth(ACD),and pupil diameter(PD) were measured by a single examiner using successive instrumentation by Pentacam and Orbscan.RESULTS: There was no significant difference between the two instruments for the measurement of CCT and TCT. In contrast, scanning-slit topography measured ACD(3.46±0.40 mm vs 3.38±0.33 mm, P =0.019) and PD(4.97 ±1.26 mm vs 4.08 ±1.19 mm, P 【0.001) significantly larger than rotating Scheimpflug camera.The two devices made similar measurements for CCT(95% CI:-2.94 to5.06, P =0.602). However, the mean difference for TCT was-6.28(95% CI:-10.51 to-2.06, P =0.004) showing a thinner measurement by Orbscan than by Pentacam. In terms of the ACD, the mean difference was 0.08 mm(95%CI: 0.04 to 0.12, P 【0.001) with Orbscan giving a slightly larger value than Pentacam. Similarly, Orbscan measurement for PD was longer than Pentacam(95% CI:0.68 to 1.08, P 【0.001).CONCLUSION: A good agreement was found between Pentacam and Orbscan concerning CCT measurement while comparing scanning-slit topography and rotatingScheimpflug camera there was an underestimation for TCT and overestimation for ACD and PD.展开更多
目的:系统评价局部应用前列腺素类似物滴眼液对原发性开角型青光眼患者角膜厚度的影响,为临床用药提供循证参考。方法:计算机检索Cochrane图书馆、PubMed、Embase、Medline、中国知网、维普数据库、中国生物医学文献数据库和万方数据库...目的:系统评价局部应用前列腺素类似物滴眼液对原发性开角型青光眼患者角膜厚度的影响,为临床用药提供循证参考。方法:计算机检索Cochrane图书馆、PubMed、Embase、Medline、中国知网、维普数据库、中国生物医学文献数据库和万方数据库等,收集前列腺素类似物滴眼液(试验组)对比常规治疗药物或安慰剂(对照组)对原发性开角型青光眼患者角膜厚度影响的随机对照试验(RCT),提取资料并按Cochrane系统评价员手册5.2中的工具评价文献质量后,采用Rev Man 5.3统计软件进行Meta分析。结果:共纳入6项RCT,合计527例患者。Meta分析结果显示,两组患者中央角膜厚度[MD=-13.63,95%CI(-28.50,1.23),P=0.07]、顶端角膜厚度[MD=-7.53,95%CI(-19.46,4.40),P=0.22]、最薄角膜厚度[MD=-5.87,95%CI(-17.69,5.95),P=0.33]、眼压[MD=-5.44,95%CI(-14.90,4.02),P=0.26]比较,差异均无统计学意义。结论:前列腺素类似物滴眼液对原发性开角型青光眼患者的角膜厚度无显著影响。展开更多
文摘AIM: To compare the anterior segment measurements obtained by rotating Scheimpflug camera(Pentacam) and Scanning-slit topography(Orbscan IIz) in keratoconic eyes.METHODS: A total of 121 patients, 71 males(58.7%)and 50 females(41.3%)(214 eyes) with the diagnosis of keratoconus(KC) were enrolled in this study. Following diagnosis of KC by slit-lamp biomicroscopic examination, central corneal thickness(CCT), thinnest corneal thickness(TCT), anterior chamber depth(ACD),and pupil diameter(PD) were measured by a single examiner using successive instrumentation by Pentacam and Orbscan.RESULTS: There was no significant difference between the two instruments for the measurement of CCT and TCT. In contrast, scanning-slit topography measured ACD(3.46±0.40 mm vs 3.38±0.33 mm, P =0.019) and PD(4.97 ±1.26 mm vs 4.08 ±1.19 mm, P 【0.001) significantly larger than rotating Scheimpflug camera.The two devices made similar measurements for CCT(95% CI:-2.94 to5.06, P =0.602). However, the mean difference for TCT was-6.28(95% CI:-10.51 to-2.06, P =0.004) showing a thinner measurement by Orbscan than by Pentacam. In terms of the ACD, the mean difference was 0.08 mm(95%CI: 0.04 to 0.12, P 【0.001) with Orbscan giving a slightly larger value than Pentacam. Similarly, Orbscan measurement for PD was longer than Pentacam(95% CI:0.68 to 1.08, P 【0.001).CONCLUSION: A good agreement was found between Pentacam and Orbscan concerning CCT measurement while comparing scanning-slit topography and rotatingScheimpflug camera there was an underestimation for TCT and overestimation for ACD and PD.
文摘目的:系统评价局部应用前列腺素类似物滴眼液对原发性开角型青光眼患者角膜厚度的影响,为临床用药提供循证参考。方法:计算机检索Cochrane图书馆、PubMed、Embase、Medline、中国知网、维普数据库、中国生物医学文献数据库和万方数据库等,收集前列腺素类似物滴眼液(试验组)对比常规治疗药物或安慰剂(对照组)对原发性开角型青光眼患者角膜厚度影响的随机对照试验(RCT),提取资料并按Cochrane系统评价员手册5.2中的工具评价文献质量后,采用Rev Man 5.3统计软件进行Meta分析。结果:共纳入6项RCT,合计527例患者。Meta分析结果显示,两组患者中央角膜厚度[MD=-13.63,95%CI(-28.50,1.23),P=0.07]、顶端角膜厚度[MD=-7.53,95%CI(-19.46,4.40),P=0.22]、最薄角膜厚度[MD=-5.87,95%CI(-17.69,5.95),P=0.33]、眼压[MD=-5.44,95%CI(-14.90,4.02),P=0.26]比较,差异均无统计学意义。结论:前列腺素类似物滴眼液对原发性开角型青光眼患者的角膜厚度无显著影响。
