| Autor: |
Rodrigues, Blanche D., Montiani‐Ferreira, Fabiano, Bortolini, Mariza, Somma, André T., Komáromy, András M., Dornbusch, Peterson Triches |
| Předmět: |
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| Zdroj: |
Veterinary Ophthalmology; Mar2021 Supplement S1, Vol. 24, p175-185, 11p |
| Abstrakt: |
Purpose: To demonstrate the effect of different probe‐cornea distances during intraocular pressure (IOP) data acquisition in dogs and rats. Animals studied: Twenty‐four conscious dogs and 15 anesthetized Wistar rats. Methods: Three interchangeable three‐dimensional printed polylactide plastic spacer collars were used in place of the original Icare TonoVet® collar piece, which provided different distances (4, 6, and 8 mm) between the instrument's probe and the corneal surface. IOP values were obtained in sequence by a single observer, with the tonometer probe at a 4‐, 6‐, and 8‐mm distance from the corneal surface. The dogs were gently restrained, and the rats were anesthetized with isoflurane. Results: Intraocular pressure values obtained at 4, 6, and 8 mm from the TonoVet® probe to corneal surface distance in both dogs and rats were significantly different (P <.01). There was a small positive correlation between IOP (mm Hg) and probe‐cornea distance (mm) (rs = 0.39 for dogs and rs = 0.51 for rats). In dogs, the mean IOP (± SD mm Hg) obtained at different distances were 16.2 ± 3.0 at 4 mm; 17.6 ± 3.4 at 6 mm; and 19.8 ± 3.8 at 8 mm. In rats, IOP values were 8.2 ± 1.5 at 4‐mm; 9.4 ± 1.8 at 6‐mm; and 10.5 ± 1.5 mm Hg at 8‐mm distance. Conclusions: Probe‐cornea distance of the Icare TonoVet® significantly affects IOP readings, even within the 4‐ to 8‐mm range recommended by the manufacturer. [ABSTRACT FROM AUTHOR] |
| Databáze: |
Complementary Index |
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