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Through-and-through eyelid laceration
Click on the image to view a larger one. Through-and-through wounds of the lid margin must necessarily involve the muscles of the obicularis occuli, the tarsal plate, skin, and conjunctiva. The lacrymal canaliculi are only 1 mm beneath the lid margin as they course from the lacrymal puncta toward the medial canthus. Lacerations of the lid margin which do not involve the lacrymal canaliculi still require expert and painstaking closure to avoid unsightly and irritating notching of the lid. If a lacrymal canaliculus is lacerated, the repair becomes much more complex, as the cut ends must be found and reapproximated.
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