With the recent dry winter weather, it is common to see patients in the outpatient clinic with discomfort from wind-driven tears. The following is a description of the common physiological and pathological conditions of tears in the wind. The people say “tears” medical often divided into overflowing tears and tears, the former is often seen in the “poor drainage”: 1, tear duct obstruction: seen in chronic dacryocystitis, trauma, foreign bodies, tumors and other reasons to make the tear duct narrow, tear duct incomplete obstruction, tear drainage function Lower, the normal amount of tear secretion can not completely flow into the nasal cavity and out of the eyelid, the appearance of lacrimation. Such patients tend to shed tears uninterruptedly, but the reflex increase in tear secretion after being stimulated by cold wind is more obvious. It is necessary to remove the cause and treat according to the tear duct obstruction. 2, poor tear dots attachment position. The tear secretion of such patients is normal or even a little less, the tear duct is not obstructed, the washing is smooth, but the lower eyelid is loose and the orbicularis oculi muscle is loose, the tear dots cannot contact the tear river, the tear pump is weakened or disappeared so that the tear discharge is obstructed, and the tearing performance appears. The second case of “tearing” is also known as “excessive source”, which is often seen in: 1, the tear glands are stimulated by external stimuli such as cold air or wind, can reflexively secrete more tears, and too many tears can not be discharged in time by the tear duct and flow outside the eyelid, resulting in the phenomenon of tearing The phenomenon of tearing. 2, due to chronic inflammation of the eye such as conjunctivitis, trachoma stimulation, is reflexive lacrimation increased. 3, lid gland dysfunction, blepharitis and other causes of dry eye, tear film stability is poor, the wind after the tear evaporates rapidly, tear film rupture, corneal exposure to the air and thus reflexive tearing. The wind is small, but serious and annoying, especially for some people who work outdoors or drive, but also affect the vision, interfere with work, should go to the hospital, discretionary treatment.