测定泪道功能,在眼科临床中具有重要意义。目前,眼科临床用于泪道功能测定的常用制剂有0.5%荧光素、2%糖精钠。前者是以荧光素滴眼后,用棉签置于下鼻道前方末端,再观察棉签尖端荧光色素,即为Jones 氏试验;后者是利用糖精钠点眼后,根据受检查者的味觉来诊断。我们根据舌 Determination of lacrimal duct function in clinical ophthalmology is of great significance. Currently, ophthalmology commonly used in lacrimal duct function determination of 0.5% fluorescein, 2% sodium saccharin. The former is fluorescein eye drops, cotton swab placed in front of the lower end of the nose, and then observe the cotton swab tip fluorescence pigment, which is Jones’s test; the latter is the use of sodium saccharin eye, according to the taste of the subjects to diagnose. We are based on the tongue