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Diagnostic
Tests or procedures used by your vet to determine what is wrong with your horse, in order to reach a diagnosis.

Cost: Under $100

These cost ranges are approximate and may vary from region to region.
Additional charges may also apply.

YOUR VET MAY PERFORM

Fluorescein Staining of Cornea

Cost: Under $100

These cost ranges are approximate and may vary from region to region.
Additional charges may also apply.

Summary

Fluorescein staining is a routine procedure for determining the health of the corneal surface. In areas where the surface covering has been lost, the dye is able to seep into the deeper layer of the cornea, revealing the injury as a bright green spot.

Why A Vet Chooses This Diagnostic

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Related Observations

Your vet might choose this diagnostic test if you were making these observations.

Very Common
Less Common
Rare
more observations
BENEFITS
A quick, inexpensive test for determination of surface breaks in the corneal surface. The dye also collects in the nostril, demonstrating that the naso-lacrimal (tear) duct is clear.

LIMITATIONS

Fluorescein stain mucus or other debris adhered to the corneal surface.

Fluorescein will not stain abrasion of the corneal surface. Other stains like Rose Bengal may be better.

your role

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Questions To Ask Your Vet:
  • Did you use fluorescein staining to be sure that my horse does not have a break in the surface of the cornea?

further reading & resources

Author: Doug Thal DVM Dipl. ABVP