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Chapter: Ophthalmology: The Ophthalmic Examination

Examination of the Eyelids and Nasolacrimal Duct

The upper eyelid covers the superior margin of the cornea.

Examination of the Eyelids and Nasolacrimal Duct

The upper eyelid covers the superior margin of the cornea. A few millimeters of the sclera will be visible above the lower eyelid. The eyelids are in direct con-tact with the eyeball.

Stenosis of the nasolacrimal duct produces a pool of tears in the medialangle of the eye with lacrimation (epiphora). In inflammation of the lacrimalsac, pressure on the nasolacrimal sac frequently causes a reflux of mucus orpus from the inferior punctum. Patency of the nasolacrimal ductis tested byinstilling a 10% fluorescein solution in the conjunctival sac of the eye. If the dye is present in nasal mucus expelled into paper tissue after two minutes, the lacrimal duct is open.

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Ophthalmology: The Ophthalmic Examination : Examination of the Eyelids and Nasolacrimal Duct |


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