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📋Overview
Blocked tear ducts, clinically referred to as nasolacrimal duct obstruction, occur when the pathway that typically drains fluid from the ocular surface into the nasal cavity becomes restricted. This disruption prevents the normal clearance of tears, often leading to an accumulation of fluid on the eye surface.
This condition may involve a partial or complete blockage at any point within the lacrimal drainage system. While the term is frequently used in general discussion, it specifically identifies the physiological inability of tears to follow their natural route away from the eye.
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