三种眼压计与Pentacam眼压校正系统的应用比较

Application comparison between three kinds of tonometer and Pentacam intraocular pressure correction system

目的:比较非接触式眼压计(NCT)、Goldmann压平式眼压计(GAT)、动态轮廓眼压计(DCT)和Pentacam三维眼前节分析系统四种方法检查眼压的差异,并研究它们与中央角膜厚度(CCT)和中央角膜曲率(CCV)的关系。方法:对拟行LASIK手术的143例286眼患者用Pentacam系统测量CCT和CCV后,分别用NCT,GAT和DCT测量眼压,并用Pentacam系统的Ehlers,Shah,Dresden,Orssengo/Pye和Kohlhaas5种眼压校正方法对NCT眼压值进行校正,将测量结果进行方差分析、相关性及线性回归分析。结果:DCT值最高,DCT与其他方法之间均有显著性差异(P<0.01);GAT与DCT,Kohlhaas,Shah之间有差异(P<0.05),与其他方法之间无差异;各组眼压值之间有较好的相关性,GAT与DCT的相关性最强(r=0.702);NCT受CCT影响最大,GAT受CCV影响最大,DCT,Dresden,Orssengo/Pye,Shah与CCT和CCV均不存在相关性(P>0.05)。结论:对CCT和CCV正常的健康人群进行青光眼筛查时建议使用压平式眼压计,对可疑的患者,尤其是CCT和CCV偏离正常的患者,宜进一步行DCT检查或者用Pentacam系统进行眼压校正。

AIM：To compare the differences of the intraocular pressure（IOP） measured by four methods：non-contact tonometer （NCT）,Goldmann applanation tonometer （GAT）,dynamic contour tonometer （DCT） and Pentacam three-dimensional anterior segment analyzer,and to study the relationship between these measuring methods with central corneal thickness （CCT） and central corneal curvature （CCV）.METHODS：After measured CCT and CCV by Pentacam system,the IOP of 143 patients （286 eyes） which would be treated by LASIK operation was measured by NCT,GAT and DCT respectively.Then 5 methods were used：Ehlers,Shah,Dresden,Orssengo/ Pye and Kohlhaas proposed by Pentacam system to correct the IOP which was measured by NCT.Finally analysis of variance（ANOVA）,correlation and linear regression analysis were adopted to evaluate the IOP data.RESULTS：IOP of DCT was the highest.There was significantly different between DCT and other methods （P0.01）;There was difference between GAT and DCT,Kohlhaas,Shah （P0.05） and no difference between GAT and other methods;Each group IOP had good correlation,GAT and DCT had strongest correlation （r=0.702）;CCT had more influences on NCT IOP,CCV had more influences on GAT,there was no correlation between DCT,Dresden,Orssengo/ Pye,Shah and CCT,CCV （P0.05）.CONCLUSION：The healthy persons with normal CCT and CCV are recommended using applanation tonometer for glaucoma screening.The suspected patients whose CCT and CCV are departure from normal are suggested to check farther by DCT or to correct IOP by Pentacam system.