Quantitative assessment of pupillary light reflex in normal and anesthetized
dogs: a preliminary study |
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| Authors: | Jury KIM Jiseong HEO Dongbeom JI Min-Su KIM |
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| Affiliation: | 1)College of Veterinary Medicine, Chonbuk National University, 664–14 Duckjin-dong, Duckjin-ku, Jeonju, 561-756, Republic of Korea;2)Ji dong Beom Animal Hospital, 266–10 Bugok-dong, Geumjeong-ku, Busan, 609-822, Republic of Korea;3)Department of Small Animal Clinical Sciences, College of Veterinary Medicine, University of Florida, Gainesville, Florida, 32618, U.S.A. |
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| Abstract: | The purpose of this study was to quantitatively assess the pupillary light reflex (PLR)in normal and anesthetized dogs using a pupillometer. Eleven dogs (20 eyes) of variousbreeds were included. PLRs were measured with a handheld pupillometer in dim light beforeand during anesthesia. Anesthesia was conducted with atropine, xylazine and ketamine.Parameters of pupillometry included neurological pupil index (NPi), pupil size, percent ofchange (%CH), latency (LAT), constriction velocity (CV), maximum constriction velocity(MCV) and dilation velocity (DV). NPi,%CH, CV and MCV were significantly decreased duringanesthesia compared with the pre-anesthesia data. The results suggest thatatropine-xylazine-ketamine combination anesthesia depresses the PLR. Additionally, thisstudy demonstrates the feasibility of the use of a pupillometer in dogs. |
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| Keywords: | canine pupillary light reflex pupillometer |
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