Felis ISSN 2398-2950

Contact lens: application

Synonym(s): veterinary bandage lens, soft contact lens

Contributor(s): Dennis E Brooks, John Hales, David Williams

Introduction

  • Soft contact lenses act as a protective shield on the cornea.
  • They permit corneal repair and improve patient comfort by preventing contact between damaged cornea and eyelids.

Uses

  • Corneal ulceration Ulcerative keratitis to reduce pain and to retain tear film over ulcerated area to aid healing.
  • Corneal edema and bullous keratopathy may prevent rupture of epithelial bullae and reduce discomfort caused by abrasion of ulcers.
  • Symblepharon, eg neonatal herpes conjunctivitis and keratitis Cornea: herpesvirus keratitis. After surgical correction, application of lens during healing period prevents conjunctiva reattaching to exposed cornea.
  • Traumatic injury, eg laceration or perforation.

Advantages

  • Simple to apply and remove.
  • Well tolerated.

Disadvantages

  • Contraindicated in presence of keratoconjunctivitis sicca   Eye: keratoconjunctivitis sicca  and active infection.
  • Hypersensitivity reactions have been reported in humans.
    Animals with atopy may be predisposed to allergic reaction.
  • Avoid use in conjunction with dyes, eg fluorescein Fluorescein test and Rose Bengal Rose-Bengal staining, as these will be absorbed onto lens surface.
  • Can fall out due to poor fit.

Requirements

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Preparation

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Procedure

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Aftercare

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Outcomes

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Further Reading

Publications

Refereed papers

  • Recent references from PubMed and VetMedResource.
  • Sansom J & Barnett K (1997) Soft contact lenses in small animals. Waltham Focus 7, 21-23.
  • Morgan R V, Bachrach A Jr. & Ogilvie G K (1984) An evaluation of soft contact lens usage in the dog and cat. JAAHA 20 (6), 885-888 VetMedResource.

Other sources of information

  • Petersen-Jones S & Crispin S (2002) BSAVA Manual of Small Animal Ophthalmology. 2nd edn. British Small Animal Veterinary Association. ISBN 0 905214 54 4


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