A tear duct normally allows tears to drain from the eyes. The symptom of a blocked tear duct is excessive tearing of a watery, irritated eye. If it is obstructed, fails to open properly, or remains blocked the tear duct sac fills with fluid and may become swollen and inflamed causing an infection, an injury, or a tumor. The blocked tear duct can be corrected but the treatment depends on the cause and your age.
