E-ISSN 2218-6050 | ISSN 2226-4485
 

-


Changes in intraocular pressure and horizontal pupil diameter during use of topical mydriatics in the canine eye

Liga Kovalcuka1,*, Agris Ilgazs1, Dace Bandere2 and David L. Williams3.

Cited by (8)

Abstract
The objective of this study was to determine the effects of topical 0.5% tropicamide, 1% atropine sulphate and 10% phenylephrine hydrochloride ophthalmic solutions on intraocular pressure (IOP) and horizontal pupil diameter (HPD) in the dog during the first hour after treatment. Forty clinically and ophthalmologically normal canine patients (between the ages of 2 and 6 years) of varying breed and sex were used in this study. Animals were randomly divided into four groups of ten and given one drop of tropicamide, atropine, phenylephrine or saline into one eye. IOP and HPD were measured in both eyes every 5 minutes for 60 minutes. Tropicamide increased IOP by 8.8±4.0 mmHg 35 minutes post-treatment compared to pre-treatment (P<0.01) only in treated eye. IOP in the contralateral eye did not increase. With atropine the maximum increase in IOP was 2.6±2.8 mmHg at 20 minutes post treatment in the treated eye (P<0.01). IOP in the contralateral eye did not increase. Phenylephrine increased IOP by 2.3±2.1 mmHg (P<0.05) 10 minutes after treatment. Also in the untreated eye IOP increased by 2.3±2.1 mmHg, 20 minutes post-treatment. Maximum HPD in eyes treated with tropicamide occurred at 55 minutes and with atropine at 60 minutes. There were no HPD changes in the contralateral, untreated eye. Topical 10% phenylephrine showed maximal pupil dilation 60 minutes after treatment, but the HPD of the – untreated eye slightly decreased at 15 minutes, but this change only reached statistical significance at 40 min post- treatment (P<0.05). Normal saline showed no influence on IOP or HPD. The drugs investigated here show a significant increase in IOP after mydriatics.

Key words: Atropine sulphate, Horizontal pupil diameter, Intraocular pressure, Phenylephrine, Tropicamide


 
ARTICLE TOOLS
Abstract
PDF Fulltext
How to cite this articleHow to cite this article
Citation Tools
Related Records
 Articles by Liga Kovalcuka1
Articles by *
Articles by Agris Ilgazs1
Articles by Dace Bandere2 and David L. Williams3
on Google
on Google Scholar


This Article Cited By the following articles

Development of and Validity Evidence for a Canine Ocular Model for Training Novice Veterinary Students to Perform a Fundic Examination
Journal of Veterinary Medical Education 2021; 48(5): 620.

1
 
The effect of central corneal thickness on intraocular pressure values using various tonometers in the dog
Vet. Ophthalmol. 2021; 24(S1): 154.

2
 

Vet. Ophthalmol. 2021; 24(1): 80.

3
 
Normal reference ranges of ocular physiology and sonographic biometry of Latvian Hunting dogs
Vet World 2020; 13(4): 807.

4
 
Effects of topical 1% cyclopentolate hydrochloride on quantitative pupillometry measurements, tear production and intraocular pressure in healthy horses
Vet Ophthalmol 2020; 23(4): 730.

5
 
Effect of topical ophthalmic instillation of rocuronium bromide on the intraocular pressure of kestrels (Falco tinnunculus) and little owls (Athene noctuae)
Journal of the American Veterinary Medical Association 2019; 255(12): 1359.

6
 
Pupillary function test in rat: Establishment of imaging setup and pharmacological validation within modified Irwin test
Journal of Pharmacological and Toxicological Methods 2019; 99(): 106588.

7
 
Changes in pupil size and intraocular pressure after topical application of 0.5% tropicamide to the eyes of dogs sedated with butorphanol
ajvr 2019; 80(1): 95.

8
 
How to Cite this Article
Pubmed Style

Liga Kovalcuka,, Agris Ilgazs, Dace Bandere and David L. Williams. Changes in intraocular pressure and horizontal pupil diameter during use of topical mydriatics in the canine eye. Open Vet J. 2017; 7(1): 16-22. doi:10.4314/ovj.v7i1.3


Web Style

Liga Kovalcuka,, Agris Ilgazs, Dace Bandere and David L. Williams. Changes in intraocular pressure and horizontal pupil diameter during use of topical mydriatics in the canine eye. https://www.openveterinaryjournal.com/?mno=302656884 [Access: February 06, 2023]. doi:10.4314/ovj.v7i1.3


AMA (American Medical Association) Style

Liga Kovalcuka,, Agris Ilgazs, Dace Bandere and David L. Williams. Changes in intraocular pressure and horizontal pupil diameter during use of topical mydriatics in the canine eye. Open Vet J. 2017; 7(1): 16-22. doi:10.4314/ovj.v7i1.3



Vancouver/ICMJE Style

Liga Kovalcuka,, Agris Ilgazs, Dace Bandere and David L. Williams. Changes in intraocular pressure and horizontal pupil diameter during use of topical mydriatics in the canine eye. Open Vet J. (2017), [cited February 06, 2023]; 7(1): 16-22. doi:10.4314/ovj.v7i1.3



Harvard Style

Liga Kovalcuka,, Agris Ilgazs, Dace Bandere and David L. Williams (2017) Changes in intraocular pressure and horizontal pupil diameter during use of topical mydriatics in the canine eye. Open Vet J, 7 (1), 16-22. doi:10.4314/ovj.v7i1.3



Turabian Style

Liga Kovalcuka,, Agris Ilgazs, Dace Bandere and David L. Williams. 2017. Changes in intraocular pressure and horizontal pupil diameter during use of topical mydriatics in the canine eye. Open Veterinary Journal, 7 (1), 16-22. doi:10.4314/ovj.v7i1.3



Chicago Style

Liga Kovalcuka,, Agris Ilgazs, Dace Bandere and David L. Williams. "Changes in intraocular pressure and horizontal pupil diameter during use of topical mydriatics in the canine eye." Open Veterinary Journal 7 (2017), 16-22. doi:10.4314/ovj.v7i1.3



MLA (The Modern Language Association) Style

Liga Kovalcuka,, Agris Ilgazs, Dace Bandere and David L. Williams. "Changes in intraocular pressure and horizontal pupil diameter during use of topical mydriatics in the canine eye." Open Veterinary Journal 7.1 (2017), 16-22. Print. doi:10.4314/ovj.v7i1.3



APA (American Psychological Association) Style

Liga Kovalcuka,, Agris Ilgazs, Dace Bandere and David L. Williams (2017) Changes in intraocular pressure and horizontal pupil diameter during use of topical mydriatics in the canine eye. Open Veterinary Journal, 7 (1), 16-22. doi:10.4314/ovj.v7i1.3