Dry eye is a kind of disease which is caused by the instability of tear film and / or damage of ocular surface caused by the quantity or quality of tear or the abnormality of fluid dynamics. With the change of people's life and work style, the popularity of contact lenses, mobile phones, computers and other video terminals, the incidence of dry eye disease is increasing year by year, and the age of onset is becoming younger. Dry eye patients often suffer from dry eyes, astringent eyes, foreign body sensation, burning sensation, photophobia, tears, visual fatigue and other symptoms, which seriously affect the quality of work and life. Ultraplug punctal plug provides an effective solution for the treatment of dry eye.


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