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泪液,俗称眼泪。眼泪的作用是在眼内营养和湿润角膜(黑眼珠),防止角膜干燥和感染,润滑眼睑及眼球的运动。在正常情况下,泪液不断地由泪腺分泌,又不断地经过泪小点、泪小管、泪总管、泪囊、鼻泪管(总称泪道)排至鼻腔内,而不发生流泪。但是,如果由于泪腺分泌过多,或者泪液排出受阻,就会发生流泪。经常流泪是泪器病的主要症状,因此,患者应到医院眼科就诊,以查明原因,及时进行治疗。
Tears, commonly known as tears. The role of tears in the eye nutrition and moist cornea (black eyes), to prevent corneal dryness and infection, lubrication of the eyelids and eye movement. Under normal circumstances, the tears continue to be secreted by the lacrimal gland, but also continue to punctate, lacrimal duct, tear duct, dacryocyst, nasolacrimal duct (collectively lacrimal duct) discharge to the nasal cavity, without tearing. However, tearing can occur if the lacrimal gland is excreted too much or the discharge of the lacrimal fluid is blocked. Tears often tear the main symptoms of disease, therefore, patients should go to the hospital ophthalmology to identify the reasons for timely treatment.