非接触式和Goldmann压平眼压计测量结果的一致性分析

目的：在原发性开角型青光眼（ POAG ）中应用佳能TX-F非接触式眼压计（ NCT）和Goldmann压平眼压计（ GAT）测量眼压（ IOP）,并比较测量值。 方法：55例（55右眼）确诊为POAG的患者接受详细的眼科检查,光学相干断层扫描成像和自动视野检查。使用NCT1（一次喷气模式）, NCT3（三次喷气模式）和GAT测量眼压,每隔5分钟一次。 结果：55例（55右眼） POAG 患者平均年龄为64.1±8.1岁。比较NTC1,NTC3测量的眼压值（14.22±3.42,14.28±3.29mmHg）与GAT测量的眼压值（14.66±3.49mmHg）无统计学差异（ P=0.291）。使用Bland-Altman 方法比较NCT1-GAT, NCT3-GAT和NCT1-NCT3得出的95%一致性界限（IOA）分别为-4.9~＋4.4mmHg,-4.1~＋3.4mmHg和-3.4~＋3.3 mmHg。 结论：虽然NCT与GAT测量的眼压值相似,但偏大的IOA范围限制了NCT1,NCT3和GAT在POAG患者中的互换应用。

Effects of puff times on intraocular pressure agreement between non-contact and Goldmann applanation tonometers

AIM: To compare intraocular pressure(IOP)values obtained from two different puff modes of Canon TX-F non-contact tonometer(NCT)and Goldmann applanation tonometer(GAT)in patients with primary open angle glaucoma(POAG).

METHODS: The study group comprised 55 right eyes of 55 patients with a confirmed diagnosis of POAG, which were under treatment. All patients underwent detailed ophthalmological examinations, optical coherence tomography imaging and automated perimetry. Intraocular pressure measurements were performed using 1-puff mode of NCT(NCT1), 3-puffs mode of NCT(NCT3)and GAT with 5 minutes intervals in order.

RESULTS: Fifty-five eyes of 55 patients with POAG(mean age of 64.1±8.1 years)were enrolled into the study. NCT1 and NCT3 gave similar IOP values when compared with GAT measurements(14.22±3.42, 14.28±3.29, 14.66±3.49mmHg respectively, P=0.291). Intertonometer agreement was assessed using the Bland-Altman method. The 95% limits of agreement(LoA)for NCT1-GAT, NCT3-GAT and NCT1-NCT3 comparisons were -4.9 to +4.4mmHg, -4.1 to +3.4mmHg, and -3.4 to +3.3mmHg respectively.

CONCLUSION: Although IOP measurements obtained from two puff modes of NCT and GAT showed similar values, wide range of LoA might restrict use of NCT1, NCT3 and GAT interchangeably in POAG patients.