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Lacrimal System Anatomy

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Superior laterally in the orbit,

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one finds the lacrimal gland, and medially,

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one has the lacrimal sac.

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The tears are produced by the lacrimal gland and flow

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across the eye from lateral to medial and they are

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collected in the superior and inferior

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lacrimal canaliculi.

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From the superior and inferior canaliculi,

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the tear ducts pass through the sinus of Maier

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to get to the lacrimal sac. To get from the lacrimal

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sac to the nasolacrimal duct, one must

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pass through the valve of Krause.

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The lacrimal duct extends inferiorly and at the

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inferiormost portion, one has the valve of Hasner

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which leads from the nasolacrimal duct to just

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under the inferior turbinate within the nasal cavity.

Report

Description

Faculty

David M Yousem, MD, MBA

Professor of Radiology, Vice Chairman and Associate Dean

Johns Hopkins University

Tags

Orbit

Neuroradiology

Neuro

MRI

Head and Neck

CT

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