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Related Experiment Videos

The lens and cataracts.

Andrew G Matthews1

  • 1McKenzie, Bryson, and Marshall Veterinary Surgeons, 21 Hill Street, Kilmarnock, Scotland KA3 1HA United Kingdom. harelawfarm@tiscali.co.uk

The Veterinary Clinics of North America. Equine Practice
|July 24, 2004
PubMed
Summary
This summary is machine-generated.

Lens opacities, including cataracts, affect 5-7% of horses. While complete cataracts cause significant vision loss, focal cataracts in horses rarely impact vision.

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Area of Science:

  • Veterinary Ophthalmology
  • Equine Health

Background:

  • Lens opacities are found in 5-7% of horses with normal eyes.
  • Cataracts range from minor remnants to dense opacities affecting lens structures.

Purpose of the Study:

  • To define cataracts in horses.
  • To describe the prevalence and impact of equine cataracts.

Main Methods:

  • Review of veterinary ophthalmology literature.
  • Analysis of cataract definitions and classifications.

Main Results:

  • Cataracts involve lens epithelium, capsule, cortex, or nucleus.
  • Complete cataracts cause significant visual disability.
  • Focal or incomplete cataracts in horses rarely cause apparent visual dysfunction.

Conclusions:

  • Equine cataracts are common but often localized.
  • Severity and location determine visual impact in horses.