Does the order of intraocular pressure measurement affect tonometry results?
applanation tonometry
dog
glaucoma
intraocular pressure
rebound tonometry
repeated measures
Journal
Veterinary ophthalmology
ISSN: 1463-5224
Titre abrégé: Vet Ophthalmol
Pays: England
ID NLM: 100887377
Informations de publication
Date de publication:
Mar 2021
Mar 2021
Historique:
revised:
22
12
2020
received:
17
06
2020
accepted:
30
12
2020
pubmed:
5
2
2021
medline:
22
9
2021
entrez:
4
2
2021
Statut:
ppublish
Résumé
To determine whether the order of intraocular pressure (IOP) measurement affects readings, regardless of which eye is measured first. Intraocular pressure was measured in 31 and 41 dogs using applanation and rebound tonometry, respectively. Initially, IOP was measured in the first (randomly chosen) eye (reading A), followed by measurement in the fellow eye (reading B), and a third (repeated) measurement in the first eye (reading C). After 15 minutes, measurements were repeated in reverse order (readings D - F). Applanation tonometry revealed significant differences between readings A & B (15.6 ± 2.3 and 14.8 ± 2.7 mm Hg, respectively, p = .02), A & C (15.6 ± 2.3 and 14.5 ± 2.4 mm Hg, respectively, p = .002), D & E (14.5 ± 2.3 and 13.7 ± 2.1 mm Hg, respectively, p = .02), D & F (14.5 ± 2.3 and 13.9 ± 1.9 mm Hg, respectively, p = .05), and A & E (15.6 ± 2.3 and 13.7 ± 2.1 mm Hg, respectively, p = .001). Rebound tonometry yielded similar results, with additional differences between B & C (19.1 ± 3.0 and 18.2 ± 2.4 mm Hg, respectively, p = .002) and E & F (18.7 ± 3.3 and 18.2 ± 3.3 mm Hg, respectively, p = .02). Intraocular pressure measured in the first eye, whether right or left, is higher than in the fellow eye. Repeated tonometry in the same visit could result in a significant IOP decrease, though the magnitude may not be clinically appreciable.
Types de publication
Journal Article
Randomized Controlled Trial, Veterinary
Langues
eng
Sous-ensembles de citation
IM
Pagination
146-153Subventions
Organisme : State of Israel, Ministry of Aliyah and Integration
ID : 1001247728
Informations de copyright
© 2021 American College of Veterinary Ophthalmologists.
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