AIM: To evaluate the intraocular pressure(IOP)measurements by Icare rebound tonometer over a contact lens in comparison with Goldmann applanation tonometry(GAT). METHODS: Fifty patients using contact lens were include...AIM: To evaluate the intraocular pressure(IOP)measurements by Icare rebound tonometer over a contact lens in comparison with Goldmann applanation tonometry(GAT). METHODS: Fifty patients using contact lens were included in this study. One of the eyes of the patients was selected randomly and their IOP were measured by rebound tonometer with and without contact lens(RTCL,RT respectively) and by GAT, as well as their central corneal thickness(CCT) by optical pachymeter. The results of both methods were compared by correlation analysis, general linear method repeated measure and Bland-Altman analysis.RESULTS: Mean IOP values measured by RTCL, RT and GAT were 15.68 ±3.7, 14.50 ±3.4 and 14.16 ±2.8(P 【0.001), respectively. Mean IOP by RTCL was significantly higher than the measurements implemented by RT and GAT(P 【0.001), while there was no difference between the measurements by GAT and RT(P =0.629). There was a good level of positive correlation between GAT and RTCL as well as RT(r =0.786 P 【0.001, r =0.833 P 【0.001, respectively). We have observed that CCT increase did not show any correlation with the differences of the measurements between RTCL and RT(P =0.329), RTCL and GAT(P =0.07) as well as RT and GAT(P =0.189) in linear regression model.CONCLUSION: The average of the measurements over contact lens by rebound tonometer was found to be higher than what was measured by GAT. Although this difference is statistically significant, it may be clinically negligible in the normal population.展开更多
目的探讨非接触眼压计在青光眼患者眼压测量中的临床应用效果。方法本次研究起止时间为2019年9月至2021年3月,选取200例青光眼患者(310眼)作为观察对象,依次对患者进行非接触眼压计、Goldmann眼压计眼压测量,比较不同眼压测量方案的临...目的探讨非接触眼压计在青光眼患者眼压测量中的临床应用效果。方法本次研究起止时间为2019年9月至2021年3月,选取200例青光眼患者(310眼)作为观察对象,依次对患者进行非接触眼压计、Goldmann眼压计眼压测量,比较不同眼压测量方案的临床效果以及青光眼的检出率。结果非接触眼压计眼压测量值范围在6~50 mm Hg,Goldmann眼压计眼压测量值范围在6~58 mm Hg;对于眼压≤21 mm Hg的青光眼患者,非接触眼压计与Goldmann眼压计在眼压测量结果差异无统计学意义(P>0.05);对于眼压>21 mm Hg的青光眼患者,非接触眼压计眼压测量值低于Goldmann眼压计眼压测量值(P<0.05)。应用非接触眼压计检测出293例青光眼,检出率为97.7%,应用Goldmann眼压计检出211例青光眼,检出率为68.1%,差异有统计学意义(P<0.05)。结论针对青光眼患者而言,非接触眼压计眼压测量具有操作简单、安全无创、不良反应少的优势,适用于大范围青光眼患者的筛查。对于处于临界眼压值的青光眼患者,推荐使用Goldmann眼压计眼压测量,以提高检出率,及时发现病理性眼压指标,为患者的治疗提供数据参考。展开更多
目的:通过与非接触式眼压计(non-contact tonometer,NCT)的比较,评价Diaton眼压计(DT)在准分子激光原位角膜磨镶术(laser in situkeratomileusis,LASIK)前后眼压测量中的应用价值。方法:在LASIK术前及术后1mo,分别使用NCT和DT测量患者眼...目的:通过与非接触式眼压计(non-contact tonometer,NCT)的比较,评价Diaton眼压计(DT)在准分子激光原位角膜磨镶术(laser in situkeratomileusis,LASIK)前后眼压测量中的应用价值。方法:在LASIK术前及术后1mo,分别使用NCT和DT测量患者眼压,使用SPSS13.0统计软件对所得结果进行统计学分析。结果:术后1mo时,NCT眼压测量值较术前下降(5.76±2.31)mmHg,DT眼压测量值则无显著差异(t=0.70,P=0.487);NCT与DT读数测量值差值与术中切削量呈正相关,与术后中央角膜厚度呈负相关。结论:Diaton测量眼压不受角膜厚度的影响,因此更适用于LASIK术后患者的眼压测量。展开更多
为解决非接触式眼压计的量值溯源问题,深入分析了眼压检测中所涉及的Imber-Fick以及Glodmann眼压计的原理,设计了一套非接触式眼压计检定用模拟人眼装置,采用角膜与巩膜复合结构,控制模拟人眼在溯源和检测时相同的角膜变形量与内压预设...为解决非接触式眼压计的量值溯源问题,深入分析了眼压检测中所涉及的Imber-Fick以及Glodmann眼压计的原理,设计了一套非接触式眼压计检定用模拟人眼装置,采用角膜与巩膜复合结构,控制模拟人眼在溯源和检测时相同的角膜变形量与内压预设值,并利用L型转矩平衡法,将模拟人眼的外部标准眼压值溯源至质量与长度。实验结果表明,装置具有良好的测量重复性和稳定性,分辨率高达1 Pa,且压力连续可调,整体扩展不确定度达到0.08 k Pa(k=2)。展开更多
文摘AIM: To evaluate the intraocular pressure(IOP)measurements by Icare rebound tonometer over a contact lens in comparison with Goldmann applanation tonometry(GAT). METHODS: Fifty patients using contact lens were included in this study. One of the eyes of the patients was selected randomly and their IOP were measured by rebound tonometer with and without contact lens(RTCL,RT respectively) and by GAT, as well as their central corneal thickness(CCT) by optical pachymeter. The results of both methods were compared by correlation analysis, general linear method repeated measure and Bland-Altman analysis.RESULTS: Mean IOP values measured by RTCL, RT and GAT were 15.68 ±3.7, 14.50 ±3.4 and 14.16 ±2.8(P 【0.001), respectively. Mean IOP by RTCL was significantly higher than the measurements implemented by RT and GAT(P 【0.001), while there was no difference between the measurements by GAT and RT(P =0.629). There was a good level of positive correlation between GAT and RTCL as well as RT(r =0.786 P 【0.001, r =0.833 P 【0.001, respectively). We have observed that CCT increase did not show any correlation with the differences of the measurements between RTCL and RT(P =0.329), RTCL and GAT(P =0.07) as well as RT and GAT(P =0.189) in linear regression model.CONCLUSION: The average of the measurements over contact lens by rebound tonometer was found to be higher than what was measured by GAT. Although this difference is statistically significant, it may be clinically negligible in the normal population.
文摘目的探讨非接触眼压计在青光眼患者眼压测量中的临床应用效果。方法本次研究起止时间为2019年9月至2021年3月,选取200例青光眼患者(310眼)作为观察对象,依次对患者进行非接触眼压计、Goldmann眼压计眼压测量,比较不同眼压测量方案的临床效果以及青光眼的检出率。结果非接触眼压计眼压测量值范围在6~50 mm Hg,Goldmann眼压计眼压测量值范围在6~58 mm Hg;对于眼压≤21 mm Hg的青光眼患者,非接触眼压计与Goldmann眼压计在眼压测量结果差异无统计学意义(P>0.05);对于眼压>21 mm Hg的青光眼患者,非接触眼压计眼压测量值低于Goldmann眼压计眼压测量值(P<0.05)。应用非接触眼压计检测出293例青光眼,检出率为97.7%,应用Goldmann眼压计检出211例青光眼,检出率为68.1%,差异有统计学意义(P<0.05)。结论针对青光眼患者而言,非接触眼压计眼压测量具有操作简单、安全无创、不良反应少的优势,适用于大范围青光眼患者的筛查。对于处于临界眼压值的青光眼患者,推荐使用Goldmann眼压计眼压测量,以提高检出率,及时发现病理性眼压指标,为患者的治疗提供数据参考。
文摘目的:通过与非接触式眼压计(non-contact tonometer,NCT)的比较,评价Diaton眼压计(DT)在准分子激光原位角膜磨镶术(laser in situkeratomileusis,LASIK)前后眼压测量中的应用价值。方法:在LASIK术前及术后1mo,分别使用NCT和DT测量患者眼压,使用SPSS13.0统计软件对所得结果进行统计学分析。结果:术后1mo时,NCT眼压测量值较术前下降(5.76±2.31)mmHg,DT眼压测量值则无显著差异(t=0.70,P=0.487);NCT与DT读数测量值差值与术中切削量呈正相关,与术后中央角膜厚度呈负相关。结论:Diaton测量眼压不受角膜厚度的影响,因此更适用于LASIK术后患者的眼压测量。
文摘为解决非接触式眼压计的量值溯源问题,深入分析了眼压检测中所涉及的Imber-Fick以及Glodmann眼压计的原理,设计了一套非接触式眼压计检定用模拟人眼装置,采用角膜与巩膜复合结构,控制模拟人眼在溯源和检测时相同的角膜变形量与内压预设值,并利用L型转矩平衡法,将模拟人眼的外部标准眼压值溯源至质量与长度。实验结果表明,装置具有良好的测量重复性和稳定性,分辨率高达1 Pa,且压力连续可调,整体扩展不确定度达到0.08 k Pa(k=2)。
