Li X L, Yin S Y
Zhonghua Yan Ke Za Zhi. 1989 May;25(3):159-60.
Past reports ignored the functional relationship between the upper and lower lacrimal canaliculi. The authors measured the lacrimal function in 50 normal eyes of 27 subjects and found that the drainage was more rapid in the lower lacrimal canaliculi of 25 eyes and in the upper canaliculi of 22 eyes, while the drainage time was equal in 3 eyes. The drainage in 25 eyes with both the upper and lower canaliculi open was more rapid than with any one canaliculus occluded. The authors suggested that the function of the lacrimal canaliculi might be classified into three types: the dominating, the dominated and the balanced. There was no statistical difference (P greater than 0.05) between the numbers of dominating upper or lower canaliculi in this series. The function of the upper and lower canaliculi operated synergically and complete drainage was not accomplished by any one canaliculus alone.
以往的报告忽略了上下泪小管之间的功能关系。作者对27名受试者的50只正常眼睛进行了泪液功能测量，发现25只眼睛的下泪小管和22只眼睛的上泪小管引流更快，而3只眼睛的引流时间相等。上下泪小管均开放的25只眼睛的引流比任何一只泪小管阻塞时更快。作者认为泪小管的功能可分为三种类型：主导型、被主导型和平衡型。在该系列中，主导型上泪小管或下泪小管的数量之间无统计学差异（P大于0.05）。上下泪小管协同发挥作用，任何一根泪小管都不能单独完成完全引流。
