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KMID : 0359319950350020383
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Korean Journal of Veterinary Research
1995 Volume.35 No. 2 p.383 ~ p.390
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Tear formation , the patency and the angle of bend of nasolacrimal duct in poodle dogs with tear staining syndrome
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Abstract
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This study was performed to investigate the characteristics of tear staining syndrome in poodle dogs. Schirmer tear test, fluorescein dye test and measurement of the angle of bend between vertical and horizontal bony nasolacrimal duct were conducted in both poodles and German shepherd dogs.
There were no significant differences between normal and tear-stained poodles in tear formation detemtined by Schimer tear test. However, there was significantly higher tear production in German shepherds than that in normal poodles(p<0.05).
In the fluorescein dye test for the measurement of tear excretion, the dye was observed within 14.5±6.5 minutes after dropping of the dye in normal poodles, but was not observed even over 30 minutes in tear-stained poodles. German shepherds had rather rapid passage time(0.4±0.3 minutes) than poodles in the dye excretion.
In the measurement of the angle of bend between vertical and horizontal bony nasolacrimal duct through dacryocystorhinography, there were no significant differences between normal tear-stained poodles with showing 85.0±6.8° and 89.8±6.5°, respectively. However, obtuse angle of bend(106.8±4.7°) was shown in German shepherds.
These results have ascertained that tear staining syndrome of poodle dogs was not related to tear production but to the rate of tear excretion.
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