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The lacrimal apparatus is the tear system that produces tears and drains them away from the eye. It includes tear-producing glands and a drainage pathway made of small openings, tubes, and a duct that empties into the nose. This system keeps the cornea and conjunctiva lubricated, nourished, and protected. Disruption can cause dry eye, watery eyes, or recurrent infections.
read more about lacrimal apparatus ...The lacrimal apparatus has a production side and a drainage side.
The lacrimal gland produces tear fluid that mixes with other tear film components to protect the eye surface. Blinking spreads tears evenly across the cornea and helps clear debris. Tears also carry antimicrobial factors that support ocular surface defense. If tear production is low or evaporation is high, dry eye symptoms can develop.
Tears gather near the inner corner of the eye and enter the upper and lower puncta. They then travel through the canaliculi to the lacrimal sac and down the nasolacrimal duct into the inferior meatus of the nose. This connection explains why crying can cause a runny nose. Efficient drainage depends on open ducts and a normal blink pump.
Problems may affect tear production, tear quality, or drainage.
Symptoms that worsen quickly or occur with fever or severe pain should be evaluated urgently.
Yes. Reduced tear production or poor tear quality can cause dry eye, while drainage blockage can cause watery eyes. Some people can have both issues at the same time.
The lacrimal gland makes tears, while the tear drainage pathway, including the puncta, canaliculi, lacrimal sac, and nasolacrimal duct, carries tears into the nose. Both are parts of the lacrimal apparatus.
Yes. Allergies can increase tearing and can inflame the eyelids and ocular surface, which may affect how tears spread and drain. Controlling allergy symptoms can help reduce irritation and reflex tearing.
Seek care for persistent watering, chronic discharge, swelling near the inner corner, repeated infections, or worsening vision. These can signal drainage obstruction or significant ocular surface disease that benefits from targeted treatment.
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Anatomy of the lacrimal apparatus from a rhinologist’s perspective. International Journal of Otorhinolaryngology and Head and Neck Surgery. https://www.ijorl.com/index.php/ijorl/article/view/2732/0. Date Accessed February 5, 2026.