What happens if a blocked tear duct is not treated?

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The location of a blocked tear duct will determine the importance of solving the subsequent water eye problem. If the patient has a high blockage, i.e. in the lacrimal canaliculi (small ducts located on the eyelids), this is often merely a bothersome problem because of permanent watery eyes. However, when the blockage is lower and is located after the lacrimal sac, this may become infected due to the accumulation of tears and lead to dacryocystitis (inflammation of the lacrimal sac). This could eventually generate more serious problems, such as orbital cellulitis (infection of the fat and muscles around the eye). 

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