Condition in which the lower eyelid has sagged downwards, away from the eyeball. It is caused by loss of muscle tone and elasticity, usually in older people. The entrance to the tear duct in the inner corner of the lower eyelid loses contact with lachrymal fluid in the eye and can no longer remove it, causing weeping; the patient has to wipe away tears constantly from cheeks and eyes, and this dabbing again causes irritation of the mucous membrane. The eyelid thickens. Treatment is by surgery to shorten the muscle in the lower eyelid.

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