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Reference values for Schirmer tear tests I and II in clinically normal pigs
Alexandra Trbolova1, Masoud Selk Ghaffari
1Clinic of Small Animals, University of Veterinary Medicine and Pharmacy, Kosice, Slovakia. a.trbolova@gmail.com
Veterinary Ophthalmology
|November 5, 2011
Summary
This study established normal reference values for Schirmer tear tests I and II in pigs. These findings aid in diagnosing tear deficiency and corneal conditions in swine.
Area of Science:
- Veterinary Ophthalmology
- Animal Physiology
Background:
- Accurate reference values for diagnostic tests are crucial in veterinary medicine.
- Schirmer tear tests (STT) I and II are standard methods for evaluating tear production.
Purpose of the Study:
- To establish reference values for Schirmer tear tests I and II in clinically normal pigs.
- To provide baseline data for diagnosing ocular conditions in swine.
Main Methods:
- Twenty clinically normal Landrace pigs were used.
- Schirmer tear tests I and II were performed on all pigs using standardized strips.
- Tear production was measured in the lower conjunctival fornix for one minute.
Main Results:
- Mean STT I value was 15.6 ± 3.7 mm/min; mean STT II value was 12.4 ± 3.8 mm/min.
- STT II values were significantly lower than STT I values (P < 0.001).
- Juvenile pigs had significantly lower STT I/II values than adult pigs (P < 0.001).
Conclusions:
- This study provides essential reference values for STT I and II in Landrace pigs.
- Normal tear production values are vital for accurate diagnosis of ocular diseases in pigs.
- Clinicians can better assess corneal pathology and tear deficiency syndromes using these established values.
