Measurement of tear electrolyte concentration and turnover rate using a flexible conductimetric sensor.
Measurement of tear electrolyte concentration and turnover rate using a flexible conductimetric sensor.
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使用柔性电导传感器测量泪液电解质浓度和周转率。
DOI：
10.3233/thc-1995-3206
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发表时间：
1995
期刊：
影响因子：
--
通讯作者：
I. Karube
中科院分区：
文献类型：
--
作者：
K. Mitsubayashi;K. Ogasawara;K. Yokoyama;T. Takeuchi;T. Tsuru;I. Karube
通过非侵入性方法测量泪液电导率。将灵活的 3 毫米宽电导传感器放置在人类受试者颞下侧死胡同内（类似于 Schirmer 测试条），用于评估 30 至 85 岁之间的正常健康受试者在正常、明亮的室内环境中泪液中的电解质浓度和周转率。根据泪液电导率计算泪液电解质浓度，得出平均值 297 mEq/l（S.D. 30 mEq/l；n = 29），这与之前报道的值一致。将 40.0 毫克氯化钠溶液滴入眼药水后，通过泪液电导率变化的单指数方程计算泪液周转率。平均周转率为每分钟 44.2%（S.D. = 每分钟 13.3%；n = 30），与之前报告的值一致。
Tear fluid conductivity was measured by a non-invasive method. A flexible 3 mm-wide conductimetric sensor was placed inside the human subjects temporal lower cul-de-sac (similar to Schirmer test strip), and used to evaluate electrolyte concentration and turnover rate in tear for normal, healthy subjects aged between 30 to 85 years in a normal, light indoor environment. The tear electrolyte concentration was calculated from tear conductivity to give a mean value of 297 mEq/l (S.D. 30 mEq/l; n = 29) which was consistently with previously reported values. Tear turnover rate was calculated by a single exponential equation of tear conductivity change, following the application to the eye-drops of 40.0 milligrams sodium chloride solution. The mean turnover rate was 44.2% per minute (S.D. = 13.3% per minute; n = 30), being in agreement with previously reported values.