Veterinary ophthalmology · 2014
Tear production, intraocular pressure, and conjunctival bacterial flora in a group of captive black-tailed prairie dogs (Cynomys ludovicianus).
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Meekins Jessica M, Eshar David, Rankin Amy J
Аннотация
OBJECTIVE: To report ocular diagnostic test parameters and normal conjunctival bacterial flora in captive black-tailed prairie dogs.
ANIMALS STUDIED: Seventeen black-tailed prairie dogs, ranging in age from approximately 4-6 months to 4.5 years. Eleven males came from a zoo collection and 6 females from a wildlife rehabilitation center.
PROCEDURES: Complete ocular examination was performed under isoflurane anesthesia. Tear and intraocular pressure (IOP) measurements were performed on both (n = 34) eyes of 17 prairie dogs. Phenol red thread test (PRTT) was performed first, and a modified Schirmer tear test I (mSTTI) was performed 10 min later. Indirect rebound tonometry was performed using the TonoVet® . Attempts to obtain intraocular pressure measurements using an applanation tonometry instrument were unsuccessful. Conjunctival swab samples (n = 17) were taken from both eyes of each prairie dog and pooled.
RESULTS: The most common ocular abnormality was acquired eyelid margin defects, present in seven eyes of six prairie dogs (35.3%). Mean ± SD tear production was 13.6 ± 7.8 mm/15 s (range, 3-30) for PRTT and 1.2 ± 0.9 mm/min (range, 0-4) for mSTTI. Mean ± SD IOP was 7.7 ± 2.2 mmHg (range, 3-11.4). A Staphylococcus xylosus (7/17; 41.2%) organism and a hemolytic Staphylococcus species (5/17; 29.4%) were most commonly isolated from the prairie dog conjunctival sac.
CONCLUSIONS: There was a moderate prevalence of acquired peri-ocular lesions in this group of captive black-tailed prairie dogs. While widely variable, results of tear test and intraocular pressure measurements are reported. Staphylococcus was the most commonly isolated bacterial genus.
ANIMALS STUDIED: Seventeen black-tailed prairie dogs, ranging in age from approximately 4-6 months to 4.5 years. Eleven males came from a zoo collection and 6 females from a wildlife rehabilitation center.
PROCEDURES: Complete ocular examination was performed under isoflurane anesthesia. Tear and intraocular pressure (IOP) measurements were performed on both (n = 34) eyes of 17 prairie dogs. Phenol red thread test (PRTT) was performed first, and a modified Schirmer tear test I (mSTTI) was performed 10 min later. Indirect rebound tonometry was performed using the TonoVet® . Attempts to obtain intraocular pressure measurements using an applanation tonometry instrument were unsuccessful. Conjunctival swab samples (n = 17) were taken from both eyes of each prairie dog and pooled.
RESULTS: The most common ocular abnormality was acquired eyelid margin defects, present in seven eyes of six prairie dogs (35.3%). Mean ± SD tear production was 13.6 ± 7.8 mm/15 s (range, 3-30) for PRTT and 1.2 ± 0.9 mm/min (range, 0-4) for mSTTI. Mean ± SD IOP was 7.7 ± 2.2 mmHg (range, 3-11.4). A Staphylococcus xylosus (7/17; 41.2%) organism and a hemolytic Staphylococcus species (5/17; 29.4%) were most commonly isolated from the prairie dog conjunctival sac.
CONCLUSIONS: There was a moderate prevalence of acquired peri-ocular lesions in this group of captive black-tailed prairie dogs. While widely variable, results of tear test and intraocular pressure measurements are reported. Staphylococcus was the most commonly isolated bacterial genus.