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Eyes are the most important organs of the human body. The important parts of the eyes are conjunctiva, cornea, Iris, pupil, retina, sclera. Eye is protected by eyelid from external environment. The common eye disease is kerato conjunctivitis sicca (KCS) i.e dry eyes syndrome. Tear is secreted by a lacrimal gland which lubricates the eye. The dry eyes disease syndrome commonly is caused because tears are not secreted properly by the tear duct or the tear film gets evaporated from the surface of the eye due to various factors or due to environmental changes. Dry eyes disease caused due to age, environmental factor like increase in air pollution, increase in temperature, humidity in the atmosphere, using contact lens, medication also causes dry eyes. This article reviews the causes, symptoms, and recent treatment system of dry eyes disease. Dry eyes can be treated by using medications like artificial tears, Carmellose artificial tears eye drops, Cyclosporine A, Difluprednate, Lacrisert nutritional supplements, omega-3 fatty acids, etc. The therapy like Meibomian gland expression, Intense pulsed light, Lipiflow, etc. the dry eyes disease not only affecting human eye but it also affects animals like dogs and cat.
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