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Last reviewed: 11 Mar 2025
Last updated: 10 Oct 2024
10 Oct 2024

Limit topical anaesthetics to single use for initial symptom relief and to aid examination

​Repeated use of topical anaesthetics may be toxic to the corneal epithelium and may impair healing (e.g., risks corneal melting, ring infiltrates, and infection).[13][15][16]

Topical anaesthetics can provide initial symptom relief and aid examination in patients with corneal abrasions or recurrent corneal erosions, but should be limited to single use by a medical professional.[13][15][16]

Patients should not receive topical anesthetics for use at home.[15]

See Management: approach

Original source of update

Summary

Definition

History and exam

Key diagnostic factors

  • presence of risk factors
  • eye pain
  • tearing
  • photophobia
  • blurred vision
  • ciliary flush

Other diagnostic factors

  • presence of foreign body
  • red reflex
  • corneal opacity
  • rust ring
  • blepharospasm

Risk factors

  • eye trauma
  • foreign body in the eye
  • contact lens use
  • working in the automotive industry
  • lack of protective eyewear
  • prior corneal abrasion
  • deployment of airbag during motor vehicle collision

Diagnostic investigations

1st investigations to order

  • visual acuity
  • fluorescein staining

Investigations to consider

  • CT scan of head and orbits

Treatment algorithm

Contributors

Authors

Christopher McStay

Associate Professor of Emergency Medicine

Department of Emergency Medicine

Columbia University College of Physicians and Surgeons

New York

NY

Disclosures

CM declares that he has no competing interests.

Peer reviewers

Instructor in Clinical Medicine

Emergency Medicine Department

New York Presbyterian Hospital

Columbia University Medical Center

New York

NY

Disclosures

CT declares that he has no competing interests.

Chair of Ophthalmology

Corneal and Cataract Surgery

University of Melbourne

Melbourne

Australia

Disclosures

RV declares that he has no competing interests.

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