Corneal foreign bodies.

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Date: Mar. 21, 2022
From: CMAJ: Canadian Medical Association Journal(Vol. 194, Issue 11)
Publisher: CMA Impact Inc.
Document Type: Article
Length: 586 words
Lexile Measure: 1710L

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1 Clinical evaluation of corneal foreign bodies includes lid eversion and fluorescein staining

Ocular trauma accounts for 8% of emergency department visits; of these, 31% involve corneal foreign bodies. (1) A focused history includes presenting symptoms, type of foreign body, penetrability, entry velocity, duration since injury, concurrent contact lens usage and ocular history. (1) Evaluation includes assessment of visual acuity, pupillary response and extraocular movements, and fluorescein staining. Vertical scratch marks that stain with fluorescein suggest a foreign body under the upper lid. In this case, the upper lid should be fully everted during examination. (2) A Wood lamp has low sensitivity (52%) for fluorescein uptake compared with a slit lamp. Patients who continue to be symptomatic 24 hours after a negative Wood lamp examination should be re-examined in the emergency department or clinic. (3)

2 Clinicians should screen for penetrating injuries of the globe

It is important...

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Gale Document Number: GALE|A697327357