Intraocular pressure in normal dairy cattle |
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| Authors: | Gum GG Gelatt KN Miller DN MacKay EO |
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| Institution: | Pharmaceutical Development, B. Braun Medical/McGaw, Inc., Irvine, CA, USA,;Department of Small Animal Clinical Sciences, College of Veterinary Medicine, University of Florida, Gainesville, FL 32610–0126, USA,;Sunset Meadows Country Animal Hospital, Gainesville, Fl 32606, USA,;Department of Small Animal Clinical Sciences, College of Veterinary Medicine, University of Florida, Gainesville, FL 32610–0126, USA |
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| Abstract: | Intraocular pressure (IOP) was measured in normal dairy cows by applanation tonometry. In the first study of 15 Holstein and 17 Jersey cows the mean IOP by Mackay-Marg tonometry was 27.5 ± 4.8 mmHg (range 16–39 mmHg); no significant differences ( P < 0.92) were observed between the Holstein and Jersey breeds. In the second study of 15 Holstein and 12 Jersey cows, the mean IOPs by Mackay-Marg and TonoPen-XL tonometry were 28.2 ± 4.6 mmHg (range 19–39 mmHg) and 26.9 ± 6.7 mmHg (range 16–42 mmHg), respectively. Comparisons of the Mackay-Marg and TonoPen tonometers indicated no significant differences ( P < 0.16). The mean and range of IOP in normal dairy cows within 2 SD (95% of the population) is 27 mmHg with a range of 16–36 mmHg. |
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| Keywords: | bovine applanation tonometry intraocular pressure |
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