Vet World   Vol.13   April-2020  Article-29

Normal reference ranges of ocular physiology and sonographic biometry of Latvian Hunting dogs

Background and Aim: The Latvian Hunting dog is the only national dog breed in Latvia and so far, there are no data on the important ophthalmological data pertaining to clinical tests and ocular biometry. The aim of this study was to improve the ocular examination and to document normal reference ranges of the globe axial length (AXL), anterior chamber depth (ACD), lens thickness (LT), intraocular pressure (IOP), and Schirmer tear test (STT).

Materials and Methods: Sixteen Latvian Hunting dogs (32 eyes) of varying age and sex were included in this study. All dogs underwent an ophthalmic examination followed by tear production (STT) and IOP (TonoVet®) measurements. Biometric examination using A-mode ultrasonography was done under topical corneal anesthesia using 0.5% proparacaine hydrochloride. The eyes were scanned using A-mode ultrasonography with a 10 MHz transducer by transcorneal approach. The reference values of IOP, STT, AXL, ACD, and LT are expressed as mean ± standard deviation (SD).

Results: Statistical analysis using the SPSS v.23 and Microsoft Excel 2013 showed no statistically significant differences between the right and left eyes for either of the tests. The mean±SD value of STT and IOP values was 20.9±3.2 mm/min and 17.7±3.2 mmHg, respectively. The mean±SD of the AXL, ACD, and LT obtained by A-mode ultrasound was 2.21±0.1 cm, 0.35±0.1 cm, and 0.42±0.06 cm, respectively.

Conclusion: This study documents the normal reference ranges of important ophthalmological clinical tests (IOP and STT) and ocular biometry (AXL, ACD, and LT) in Latvian Hunting dogs. Keywords: anterior chamber depth, axial length, intraocular pressure, Latvian Hunting dogs, lens thickness, Schirmer tear test.

Keywords: anterior chamber depth, axial length, intraocular pressure, Latvian Hunting dogs, lens thickness, Schirmer tear test.

How to cite this article: Kovaļčuka L, Mūrniece G (2020) Normal reference ranges of ocular physiology and sonographic biometry of Latvian Hunting dogs, Veterinary World, 13(4): 807-811.

Received: 13-01-2020  Accepted: 03-04-2020     Published online: 28-04-2020

Corresponding author: Līga Kovaļčuka   E-mail: kovalcuka@gmail.com

DOI: 10.14202/vetworld.2020.807-811

Copyright: Kovaļčuka and Mūrniece, et al. This article is an open access article distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The Creative Commons Public Domain Dedication waiver (http:// creativecommons.org/publicdomain/zero/1.0/) applies to the data made available in this article, unless otherwise stated.