PASCAL动态轮廓眼压计临床应用的初步报告

目的:验证动态轮廓眼压计(DCT)的临床性能。方法:对81例143眼青光眼及可疑病例青光眼患者用DCT测量眼内压(IOP);132眼同时用Goldmann压平眼压计(GAT)测量眼压,部分病例同时用NIDEKUP-1000型角膜测厚仪测量中央角膜厚度(CCT)。GAT与DCT测量结果采用配对t检验,GAT、DCT测量值与CCT的关系及DCT测量值与眼脉动振幅(OPA)的相关关系采用Spearman双变量相关分析。结果:①DCT和GAT测得的眼压均数分别为(18.6±3.9)mmHg和(17.4±4.1)mmHg;DCT测得的眼压值高于GAT,其差值均数为(1.1±2.3)mmHg;两种眼压计测得的眼压值呈正相关(r=0.83,P<0.01)。②116眼同时完成了DCT眼压测量及CCT测量,两者相关系数r=0.03,P=0.77;113眼同时完成了GAT眼压测量及CCT测量,两者相关系数r=0.28,P=0.003。③143眼同时记录了DCT眼压值和眼脉动振幅(OPA),其均数分别为(18.6±3.9)mmHg和(2.6±1.1)mmHg,两者的相关系数r=0.32,P<0.01。结论:以上结果初步证实:①DCT眼压计测量值与GAT眼压测量值高度相关,但DCT测量值略高于GAT测量值,提示DCT可用于临床诊断。②DCT测量值与CCT不相关,GAT测量值与CCT显著相关,提示DCT在青光眼诊断中有独特优势。③DCT测量的OPA与IOP值显著相关,相关的机制及临床意义有待探讨。     

老年人群的动态轮廓眼压计眼压及眼脉动幅度初步调查

目的:初步了解老年人群的动态轮廓眼压计(dynamic con-tour tonometer,DCT)的眼压及眼脉动幅度(ocular pulse amplitude,OPA)分布特征。方法:对一组老年人群(88例)双眼行DCT测量,记录其眼压及OPA,对获得的数据进行分组统计学分析比较。结果:受试者总体平均DCT眼压为16.57±2.87mmHg,总体平均OPA为2.37±0.83mmHg。受试者的右眼、左眼DCT平均眼压分别为16.91±2.03mmHg及16.24±3.08mmHg,双眼之间无显著统计学差异(P=0.007)。左右眼的OPA分别为2.37±0.83mmHg及2.38±0.82mmHg,双眼之间无显著统计学差异(P=0.907)。将受试者按性别分组比较均无显著统计学差异。双眼DCT眼压值的高度与OPA的大小之间无显著相关关系(右眼:r=0.206,P=0.054;左眼:r=0.121,P=0.262)。结论:初步获得DCT眼压及OPA在老年人群中的分布特征,了解到不同性别、不同眼别之间的DCT眼压及OPA无显著统计学差异,为今后DCT临床研究奠定了一定的基础。     

近视眼患者动态轮廓眼压的调查分析

目的:初步了解近视眼患者动态轮廓眼压及眼脉动幅度(ocular pulse amplitude,OPA)的分布特征,及该人群动态轮廓眼压计(dynamic contour tonometer,DCT)眼压和屈光度、中央角膜厚度、角膜曲率的相关性。方法:对97例194眼近视眼患者采用PASCALDCT进行眼压测量,记录IOP和OPA值,测量3次求平均值。性别之间的IOP,OPA差异性采用独立样本t检验,眼别之间采用配对样本t检验,DCT眼压与OPA,屈光度(等效球镜,SE)、中央角膜厚度、角膜曲率的相关关系采用Spearman双变量相关分析。结果:被检者总体平均DCT眼压为15.25±3.02mmHg,总体平均OPA为2.08±0.63mmHg。男性、女性DCT平均眼压分别为15.27±3.46mmHg和15.23±2.65mmHg;右眼、左眼DCT平均眼压分别为15.29±3.03mmHg和15.21±3.01mmHg,性别、眼别之间DCT眼压无显著统计学差异(P=0.932,P=0.848)。男性、女性OPA分别为2.00±0.60mmHg和2.14±0.64mmHg;右眼、左眼的OPA分别为2.09±0.64mmHg和2.07±0.61mmHg,性别、眼别之间OPA无显著统计学差异(P=0.106,P=0.775)。DCT眼压和OPA之间无显著相关关系(r=0.128,P=0.074),DCT眼压和屈光度、中央角膜厚度、角膜曲率之间也无显著相关关系(r=0.131,P=0.069;r=0.106,P=0.142;r=-0.059,P=0.412)。结论:初步获得DCT眼压及OPA在近视患者中的分布特征,本研究显示在该人群中不同性别、眼别之间的DCT眼压及OPA无显著统计学差异,为今后DCT眼压临床研究奠定了一定的基础,DCT作为一种新的眼压测量仪器,可以真实反映眼内压,测量时不受角膜曲率和角膜厚度的影响。     

动态轮廓眼压计在非动脉炎性前部缺血性视神经病变患者中的应用

目的 探讨动态轮廓眼压计(dynamic contour tonometer,DCT)在非动脉炎性前部缺血性视神经病变(nonarteritic anterior ischemic optic neuropathy,NAION)及正常对照人群眼脉动振幅(ocular pulse amplitude,OPA)测量中的临床应用价值及影响因素.方法 选取NAION和正常对照组各40眼,分别用Goldmann压平眼压计(Goldmann applanation tonometer,GAT)测量眼压(intraocular pressure,IOP)、DCT测量IOP及OPA值,并测量中央角膜厚度(central corneal thickness,CCT)、中央角膜曲率(corneal curvature,CCV)以及心率、收缩压、舒张压等指标,以了解这些指标对OPA值的影响.结果 DCT测得IOP值为(17.57±2.85)mmHg(1 kPa=7.5 mmHg),GAT测得IOP值为(16.00±2.78)mmHg,差异无统计学意义(P=0.079).GAT测得IOP值与CCT、CCV均呈正相关,DCT测得IOP值与CCT、CCV均无相关性.NAION组与正常时照组的OPA平均值分别为(2.28±0.59)mmHg、(3.01±0.64)mmHg.NAION组左右眼配对比较,其中双眼发病者左右眼OPA值差异无统计学意义(P:0.790);单眼发病者差异有显著统计学意义(P=0.002).正常对照组左右眼OPA值配对比较,差异无统计学意义(P=0.531).总体OPA值与DCT测得IOP值呈正相关(r=0.236).正常对照组和NMON组的OPA值与DCT测得IOP值均呈正相关(r=0.119、0.349),但NAION组关联性更强.总OPA值与收缩压、舒张压、心率呈正相关,与年龄无相关性.结论 OCT测量结果与CAT具有良好的一致性,且受CCT、CCV等干扰因素影响较少,测量结果更为可靠;NAION崽者和正常人的OPA值存在差异,提示眼内存在血流动力学差异;正常人和NAION患者的OPA值与DCT测得IOP值分别呈正相关,这可能揭示了NAION的潜在发病原因,对于治疗及预后的判断具有一定的价值.     

动态轮廓眼压计在健康人群中使用情况的初步调查

目的调查动态轮廓眼压计（Dynamic Contour Tonometer,DCT）眼压及眼脉动幅度（Ocular Pulse Amplitude,OPA）在健康人群中使用时测量值范围。方法以DCT测量一组健康人（107例）的双眼眼压和OPA,获得该组人群的DCT眼压和OPA值的范围。结果该组健康人的DCT眼压值范围：右眼（18.02±2.96）mmHg,左眼（17.12±2.94）mmHg;OPA值范围：右眼（2.54±0.91）mmHg,左眼（2.53±0.94）mmHg。配对t检验表明,双眼之间DCT值有显著性统计学差异（t=0.240,P〈0.001）,双眼之间OPA值无显著性差异（t=5.294,P=0.811）。相关分析显示,双眼OPA值的大小与DCT眼压值之间均无显著的相关关系（右眼：r=0.124,P=0.207;左眼：r=0.133,P=0.180）。结论初步获得了DCT眼压和OPA在一健康人群中的范围,为今后的研究提供了依据。     

近视眼患者眼脉动幅度的调查分析

目的 初步了解近视眼患者眼脉动幅度(ocular pulse amplitude,OPA)的分布特征,及该人群OPA值和角膜曲率、角膜厚度、眼轴长度的相关性.方法 对97例(194眼)近视患者(年龄17～40岁,男42例84眼,女55例110眼)采用PASCAL动态轮廓眼压计(dynamic contour tonometer,DCT)测量眼压,记录其OPA值及眼压,测量3次求平均值.性别之间的眼压、0PA差异性采用独立样本t检验,眼别之间比较采用配对t检验,OPA值和角膜曲率、角膜厚度、眼轴长度的相关关系比较采用Pearson双变量相关分析.结果 被检者总体平均OPA为(2.08±0.63)mmHg(1 kPa=7.5 mmHg),总体平均DCT眼压为(15.25±3.02)mmHg,DCT眼压和OPA之间无显著相关关系(r=0.128,P=0.074).男、女OPA分别为(2.00±0.60)mmHg和(2.14±0.64)mm-Hg;右眼、左眼的OPA分别为(2.09±0.64)mmHg和(2.07±0.61)mmHg,性别、眼别之间OPA差异均无统计学意义(P=0.106、0.775).男、女DCT平均眼压分别为(15.27±3.46)mmHg和(15.23±2.65)mmHg;右眼、左眼DCT平均眼压分别为(15.29±3.03)mmHg和(15.21±3.01)mmHg,性别、眼别之间DCT眼压差异均无统计学意义(P=0.932、0.848).OPA值和角膜曲率、角膜厚度之间无相关关系(r=0.096±0.078;P=0.185、0.278),OPA值和眼轴长度之间有显著相关性(r=-0.223;P=0.002).结论 近视患者中不同性别、眼别之间的OPA及眼压差异均无统计学意义,OPA和角膜曲率、角膜厚度之间无相关关系,和眼轴长度显著负相关,OPA在临床研究中有望作为有效参数评价屈光不正及病理性眼轴过长.     

动态轮廓眼压计在正常人群中的应用及其影响因素分析

目的评价动态轮廓眼压计（DCT）与Goldmann压平眼压计（GAT）测量值之间的关系,寻找DCT眼压测量值的影响因素;分析DCT所测眼压脉动振幅（OPA）与DCT眼压值、中央角膜厚度（CCT）、角膜屈光力（CCV）、眼轴长度（AL）、前房深度（ACD）、收缩压（SBP）、舒张压（DBP）和心率（HR）的关系。方法分别测量正常人60例60眼的DCT眼压、GAT眼压、CCT、CCV、AL、ACD以及HR、SBP、DBP等指标,比较GAT、DCT2种眼压计测量的相关性及DCT测量值的影响因素。结果 DCT与GAT所测眼压平均值分别为（16.04±2.57）mmHg和（14.20±2.93）mmHg。DCT眼压值较GAT眼压值高,差异有统计学意义（t=6.454,P〈0.01）。DCT眼压值与GAT眼压值呈正相关（r=0.684,P〈0.01）。DCT眼压值与CCT不相关（r=0.212,P=0.105）,GAT眼压值与CCT呈正相关（r=0.291,P=0.024）。60例正常人的OPA均值为（2.50±0.89）mmHg,OPA与年龄、DCT眼压值、CCT、SBP、DBP、HR均不相关（P〉0.05）,与CCV呈正相关（r=0.343,P=0.007）。结论在正常人群中DCT眼压值与GAT眼压值有较好的相关性,DCT的眼压测量值不受CCT、CCV等因素的影响。DCT眼压值、CCT、SBP、DBP、HR等对OPA无明显影响。     

动态轮廓眼压计与非接触眼压计在正常青年人坐位眼压昼夜波动趋势的研究

目的:采用PASCAL动态轮廓眼压计(dynamic contour to-nometer,DCT)及KEELER非接触眼压计(non contact to-nometer,NCT)对一组健康青年昼夜眼压进行监测,描述其波动规律,并比较两种方法异同。方法:以PASCAL动态轮廓眼压计对一组19～22岁健康青年27例(54眼)进行24h眼压监测;以KEELER非接触眼压计对一组19～22岁健康青年84例(168眼)进行24h眼压监测。测量自早晨08∶00开始至次日凌晨06∶00,每隔2h为一个观察时间点,每个时间点测量3次,以平均值作为该时间点眼压。结果:DCT法与NCT法所测得的眼压平均值分别为15.76±2.37mmHg和13.77±4.33mmHg,DCT组眼压均值的最高值出现在08∶00,最低值出现在20∶00;NCT组眼压均值的最高值出现在06∶00,最低值出现在22∶00。DCT组双眼眼压波动值分别为:左眼4.56±1.19mmHg,右眼4.12±1.21mmHg;NCT组双眼眼压波动值分别为:左眼4.71±2.23mmHg,右眼5.00±1.50mmHg,两种方法左右眼间眼压值差异无统计学意义(F=0.668,P=0.415),男女眼压值差异无统计学意义(F=1.459,P=0.229),12个时间点之间眼压值差异有统计学意义(F=64.407,P=0.000),且变化趋势呈为二次抛物线,两种方法随时间变化趋势有统计学意义(F=16.615,P=0.000)。结论:正常青年眼压呈昼夜节律变化,于白昼结束时最低,夜晚结束时最高。不同的测量方法在各时间点所得测量值及昼夜变化趋势上存在差异,且采用动态轮廓眼压计在多个时间点上均比采用非接触眼压计所测值高。临床上在应用眼压作为原发性青光眼诊断和疗效判断时,应注意测量时间及方法选择上的差别。     

中央角膜厚度对3种眼压计眼压测量值的影响

目的比较分析不同中央角膜厚度(central corneal thickness,CCT)下Icare回弹式眼压计、Goldmann压平式眼压计(Goldmann applanation tonometer,GAT)和动态轮廓眼压计(dynamic contour tonometry,DCT)的眼压测量结果,探讨CCT对3种眼压计测量值的影响。方法 对78例患者152眼分别用Icare、GAT、DCT3种眼压计进行眼压测量,并进行CCT的测量,对比不同CCT下3种眼压计的测量结果,分析眼压测量值与CCT的关系。结果 在全部受测者中Icare、GAT、DCT测得的眼压均值分别为(19.16±5.03)mmHg(1 kPa=7.5 mmHg)、(18.41±4.52)mmHg和(17.23±3.69)mmHg,三者之间有显著差异(F=7.256,P=0.001)。Icare和GAT的眼压测量值均与CCT显著相关(r=0.341,P<0.001;r=0.333,P<0.001),CCT每改变10μm,Icare的眼压值改变0.47 mmHg,GAT的眼压值改变0.41 mmHg;而DCT的眼压测量值与CCT无显著相关(r=0.032,P=0.699)。结论 Icare、GAT的眼压测量值均明显受CCT的影响,而Icare受CCT影响的程度较GAT的稍大,DCT的眼压测量值基本不受CCT的影响。     

动态轮廓眼压计在正常眼压性青光眼及原发性开角型青光眼的应用研究

目的:应用动态轮廓眼压计(dynamic contour tonometer,DCT)测量正常眼压性青光眼(normal tension glaucoma,NTG)及原发性开角型青光眼(primary open angle glaucoma,POAG)患者的眼压(intraocular pressure,IOP)及眼脉动幅度值(ocular pulse amplitude,OPA),并探讨影响OPA测量值的相关因素。方法:选取NTG患者20例,POAG患者21例及正常对照组各20例,应用Goldmann压平眼压(Goldmann applanation tonometer,GAT)及DCT测量IOP,同时测量了中央角膜厚度(central corneal thickness,CCT)、眼轴(axial length,AL)、心率(heart rate,HR)、收缩压(systolic blood pressure,SBP)、舒张压(diastolic blood pressure,DBP)等指标,并探讨GAT,DCT两种眼压计测量的相关性,进而分析OPA测量值的影响因素。结果:三组被检者的IOP,OPA,SBP及DBP差异均有统计学意义(P<0.05),而CCT,AL及HR差异无统计学意义(P>0.05)。其中OPA值NTG组为(1.7±0.9)mmHg,POAG组为(2.8±0.7)mmHg,正常对照组为(2.4±0.6)mmHg;NTG组与POAG组比较(P=0.001),与正常对照组比较(P=0.005)差异均有统计学意义,POAG组与正常对照组比较(P=0.502)差异无统计学意义;OPA值与IOP,HR及CCT无相关性(P>0.05),与AL,SBP及DBP具有一定的相关性(P<0.05)。结论:NTG患者与POAG患者及正常人的OPA值存在差异,同时OPA值受AL及SBP及DBP影响。     

Physiological diurnal variability and characteristics of the ocular pulse amplitude (OPA) with the dynamic contour tonometer (DCT-Pascal<Superscript>®</Superscript>)

PURPOSE: The Pascal dynamic contour tonometer (DCT) allows measurement of intraocular pressure (IOP) independently of corneal properties. It records, simultaneously, haemodynamic IOP fluctuations and the difference between the systolic and the diastolic IOP corresponding to the ocular pulse amplitude (OPA). The OPA indirectly reflects choroidal perfusion and could be considered as an independent risk factor in glaucoma. We aimed to establish the physiological diurnal variability of the OPA and its correlations with other biophysical parameters because its characteristics remain partly unclear. METHOD: Prospective study including 52 eyes of 28 normal subjects with Goldmann applanation tonometry (GAT) IOPs < 22 mmHg. Subjects treated with systemic medications that could interfere with blood pressure or heart rate were excluded. IOP was measured at 9:00 am, 1:00 pm, and 4:00 pm by GAT and DCT. Two consecutive GAT followed by three consecutive DCT measurements were performed in each session by the same clinician (SP). Only DCT measurements with quality 1 and 2 were taken into account. Blood pressure, pulse rate, and central corneal thickness (CCT) were recorded after the last IOP measurements. Spearman correlation coefficient was used for assessment of correlations. RESULTS: Mean age was 40 +/- 14 years. Mean DCT values were significantly higher than GAT readings (mean = 16.8 +/- 2.0 vs. 15.2 +/- 2.8 mmHg, P < 0.02). The mean OPA was 2.2 +/- 0.7 mmHg (range: 1-3.4 mmHg). The mean amplitude of diurnal OPA fluctuations was 0.4 mmHg. There was no significant difference in the mean OPA values at each time of the diurnal curve. The intraclass correlation (ICC) of only one OPA measurement in relation to part of total variance due to inter-measurement variation was 78%. Averaging over three independent readings of OPA improved ICC to 91%. The OPA was correlated with GAT (r = 0.31, P < 0.0001) and DCT IOP measurements (r = 0.49, P < 0.0001). It was correlated neither with blood pressure nor with age. OPA values of both eyes of the same individual were highly correlated (r = 0.89, P < 0.0001). CONCLUSION: In normal healthy eyes, the ocular pulse amplitude remains stable during normal outpatient office hours and was not correlated with blood pressure or age of patients.     

Reproducibility of dynamic contour tonometry. Comparison with TonoPenXL and Goldmann applanation tonometry - a clinical study on 323 normal eyes

BACKGROUND: The PASCAL Dynamic Contour Tonometer (DCT) is a new diagnostic approach for the digital measurement of intraocular pressure (IOP) in eyes with glaucoma. The aim of this study was to evaluate the reproducibility of DCT in normal eyes and to compare DCT with Goldmann applanation tonometry (GAT) and TonoPenXL. PATIENTS AND METHODS: A prospective cross-sectional study on 323 normal, consecutive eyes was performed. Eyes with an IOP of more than 23 mmHg (GAT) were excluded. Central corneal power (Zeiss Ophthalmometer) and central corneal thickness (ultrasound pachymetry: Tomey AL-1000) were taken. The IOP readings were obtained as follows: 3 x DCT [quality of measurement, IOP and ocular pulse amplitude (OPA) were taken], 1 x TonoPenXL, GAT, finally: once again DCT to evaluate the tonography effect. RESULTS: The quality of 3 following IOP (DCT) readings was good (quality Q1 = 43.4 %, Q2 = 32.5 %, Q3 = 22.7 %). The reproducibility of the IOP (DCT) measurements was excellent (first measurement IOP (DCT) = 18.1 +/- 3.4 mmHg, second measurement IOP (DCT) = 18.1 +/- 3.4 mmHg, third measurement IOP (DCT) = 17.8 +/- 3.4 mmHg, Cronbach's alpha = 0.976). First and second IOP (DCT) values showed a strong correlation (r = 0.93). A significant tonography effect was observed between first and third IOP (DCT) measurements (0.4 mmHg; p = 0.004). Mean OPA (DCT) was 3.0 mmHg during the first three measurements (Cronbach's alpha = 0.964). IOP (DCT) and OPA (DCT) reproducibility showed no laterality. IOP (DCT) (17.7 +/- 3.4 mmHg) was significantly higher than IOP (TonoPenXL) (16.0 +/- 3.2 mmHg, n = 275; p < 0.001) and higher than IOP (GAT) (14.5 +/- 3.1 mmHg, n = 275; p < 0.001). The effect of tonography between the third and last IOP (DCT) measurement was zero (p = 0.6). IOP (DCT) and IOP (GAT) values were only weak correlated with central corneal thickness. CONCLUSIONS: IOP and OPA values measured with the DCT are extraordinary reproducible in normal eyes. Frequently, DCT detects higher IOP values than those obtained with TonoPenXL and GAT. A reproducible measurement of IOP and OPA may open new diagnostic fields, e. g., in glaucoma detection or ocular vascular diseases.     

Icare回弹式眼压计与Goldmann压平眼压计眼压测量结果的比较

背景Icare回弹式眼压计作为一种新式眼压计,有必要对它的临床应用价值进行评估。目的通过比较分析Icare回弹式眼压计和Goldmann压平眼压计（GAT）的眼压测量结果,探讨Icare的临床价值。方法可疑青光眼、青光眼、屈光不正及部分健康体检者78例共152眼同时接受Icare、GAT眼压测量,受检眼先行Icare测量,然后再进行GAT测量,2次测量间隔3～5min。对比分析两种眼压计的测量结果。结果使用Icare和GAT测得的眼压均值分别为（19．16±5．03）mmHg和（18．41±4．52）mmHg,96眼（63．2％）两者的眼压差值≤1mmHg,二者的测量值差异虽有统计学意义,但二者的变化呈明显正相关（r=0．940,P〈0．01）。当Icare眼压测量值〈16mmHg时,Icare的眼压测量值低于GAT,而当Icare眼压测量值≥16mmHg时恰好相反;CCT偏薄、正常以及偏厚的情况下,Icare的眼压测量值均高于GAT的眼压测量值。Icare、GAT的眼压测量值和CCT间呈正相关（r=0．341,P〈0．01;r=0．333,P〈0．01）。结论与GAT眼压计比较,Icare回弹式眼压计易操作,测量结果可靠,临床实用性更强。     

Pentacam系统对LASIK手术前后眼压测量值的修正

目的评价Pentaeam三维眼前节分析诊断系统对准分子激光原位角膜磨镶术（LASIK）前后眼压测量值校正的准确性。方法将105例（208眼）拟行LASIK的患者于术前和术后12个月分别行Pentacam三维眼前节分析系统检查和Goldmann压平眼压测量,并用Pentacam系统所提供的5种校正方法对眼压测量值进行校正。结果208眼LASIK术前眼压（15．75±2．59）mmHg,术后（10．78±2．27）mmHg,术后眼压明显低于术前（P〈0．01）;在Pentacam系统校正眼压的方法中除Kohlhaas法外,均只依据角膜顶点厚度对眼压进行校正。在5种修正方法中,Ehlers、Shah和Dresden法的眼压修正值与角膜厚度成负相关;Orssengo／Pye法的校正值随角膜厚度的增减依指数曲线关系变化;Kohlhaas法依据不同的角膜厚度和角膜曲率对眼压测量值进行校正。经Pentacam系统校正后,只有Ehlers法校正的眼压术前、术后差异无统计学意义（P〉0．05）。结论Pentacam三维眼前节分析诊断系统根据角膜厚度和／或角膜曲率校正眼压测量值,LASIK术后建议使用Ehlers法对眼压测量值进行修正,有助于对可疑青光眼和眼压异常者进行判断。     

Goldmann压平眼压计与非接触式眼压计测量眼压的对比研究

目的:比较Goldmann压平眼压计(Goldmannapplanationtonometer,GAT)与非接触眼压计(non-contacttonometer,NCT)测量眼压的差异,以评价NCT与GAT测量的相关性。方法:对265例志愿者(529眼)分别采用Goldmann压平眼压计与非接触眼压计测量眼压。结果:非接触眼压计的测量结果低于Goldmann压平眼压计,且差异有显著性(19.13vs23.43,t=22.644,P<0.01),随眼压值的升高,两者相差幅度增大,差异在眼压〉30mmHg时更为明显,但相关系数逐渐变小。结论:非接触眼压计眼压测量值较Goldmann眼压测量值偏低,非接触眼压计眼压值为临界眼压时,需应用Gold-mann压平眼压计校正,以便及时发现病理性眼压升高,避免青光眼的漏诊和失治。