Cho P
Department of Optometry and Radiography, Hong Kong Polytechnic, Hung Hom, Kowloon.
Optom Vis Sci. 1993 Dec;70(12):1049-54. doi: 10.1097/00006324-199312000-00010.
Seven normal asymptomatic Hong Kong-Chinese (HK-Chinese) were recruited and their noninvasive tear break-up time (NITBUT) was measured. Measurements were performed eight times over a period of 8 weeks to test the reliability of the NITBUT test over time. The distribution of NITBUT data was positively skewed. The mean (+/- SD) NITBUT was 16.0 (+/- 9.4) s and the mode was 17.5 s. Friedman two-way analysis of variance revealed no significant difference in the NITBUT taken on different days. For the clinical estimate of the NITBUT, we recommend taking five measures of NITBUT and average the three closest measures and use this as a representative value of tear stability for the subject.
招募了7名正常无症状的香港华人（HK-Chinese），并测量了他们的无创泪膜破裂时间（NITBUT）。在8周的时间内进行了8次测量，以测试NITBUT测试随时间的可靠性。NITBUT数据的分布呈正偏态。NITBUT的平均（±标准差）为16.0（±9.4）秒，众数为17.5秒。Friedman双向方差分析显示，不同日期测量的NITBUT没有显著差异。对于NITBUT的临床评估，我们建议测量5次NITBUT，并取最接近的3次测量结果的平均值，并将其作为该受试者泪膜稳定性的代表值。
