A pilot study of the comparative performance oftwo cotton thread tests for tear volume

Journal of The British Contact Lens Association Pub Date : 1996-01-01 DOI:10.1016/S0141-7037(96)80040-1

BOptom Pauline Cho (member of Faculty) , BSc(Hons) Optom Yee Man Kwong

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引用次数: 15

Abstract

Tear volumes of 15 normal Hong Kong (HK-Chinese were measured using a cotton thread test (CM and the phenol red thread (PRT) test on 6 different days. The results showed that both CTT and PRT tests performed on normal subjects were reliable over time. The mean CTT and PRT values were 11.8 (±4.4)mm/15s and 15.4 (±4.9)mm/15s respectively. There is a significant difference between the CTT values and the PRT values so the two tests cannot be used interchangeably. There is a day-to-day variation in both tests which may be clinically significant for some subjects and we suggested that more than one measurement be taken when an accurate tear volume measurement is important for the management of the patient. We also compared our PRT results with those of previous investigators and found that the mean PRT value is significantly lower in HK-Chinese subjects than in Caucasian subjects, while no difference was found between HK-Chinese and Japanese subjects.

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两种棉线撕裂量试验性能比较的初步研究

采用棉线试验(CM)和苯酚红线试验(PRT)对15名正常香港人(香港-中国)的泪液量进行了6天的测定。结果表明，CTT和PRT测试在正常受试者中进行的时间是可靠的。CTT和PRT的平均值分别为11.8(±4.4)mm/15s和15.4(±4.9)mm/15s。CTT值和PRT值之间存在显著差异，因此这两个测试不能互换使用。这两项测试每天都有变化，这可能对一些受试者具有临床意义，我们建议当准确的泪液体积测量对患者的管理很重要时，进行不止一次的测量。我们还将我们的PRT结果与先前研究者的结果进行了比较，发现香港-中国受试者的平均PRT值显著低于高加索受试者，而香港-中国受试者与日本受试者之间没有差异。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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Journal of The British Contact Lens Association

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