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Intraocular pressure measurements with the Tono-Pen XL® and Perkins® applanation tonometers in horses and cattle
| Content Provider | Scilit |
|---|---|
| Author | Andrade, Silvia Franco Palozzi, Rodrigo De Jesus Rolim, Rodrigo Duarte Junqueira, José Ricardo Cecílio Valle, Heloisa Ferreira Do Silva, Marcelo Kurak Da Maia, Marcelo Augusto Zampiere, Rodrigo Augusto |
| Copyright Year | 2013 |
| Description | The objective of this study was to compare the accuracy between two applanation tonometers, Tono-Pen XL® and Perkins®, in horses and cattle. The eyes of 20 horses and 20 cattle conscious and healthy were evaluated for the in vivo study and both eyes of 5 horses and 5 cattle were used as controls for the postmortem study. In conscious animals, the tonometry was performed with auriculopalpebral nerve block and then topical anesthesia for both tonometers and 1% fluorescein eye drops only for the Perkins tonometer. Readings of intraocular pressure (IOP) in the postmortem study were taken using manometry and tonometry by Tono-Pen XL® and Perkins®. The correlation coefficient (r²) between manometry and applanation tonometers Tono-Pen XL® and Perkins®, in horses, were 0.845 and 0.989, respectively, and in cattle, were 0.772 and 0.988, respectively. The mean IOP values in conscious horses with Tono-Pen XL® and Perkins® were 20.1±3.9mmHg and 20.9±3.2mmHg, respectively, and in conscious cattle, these values were 17.2±2.4mmHg and 17.9±1.4mmHg, respectively. There was a strong correlation between the IOP values obtained by direct ocular manometry and the Tono-Pen XL® and Perkins® tonometers in horses and cattle. There was no statistically significant difference between the mean IOPs obtained with both tonometers in conscious animals; however, there was a difference between the minimum values, which were on average 2-3 mmHg lower with the Tono-Pen XL® tonometer than with the Perkins® tonometer, which justifies a table of normal values differentiated for each tonometer. |
| Related Links | http://www.scielo.br/pdf/cr/v43n5/a12413cr2012-0535.pdf |
| Ending Page | 870 |
| Page Count | 6 |
| Starting Page | 865 |
| ISSN | 01038478 |
| e-ISSN | 01038478 |
| DOI | 10.1590/s0103-84782013005000030 |
| Journal | Ciência Rural |
| Issue Number | 5 |
| Volume Number | 43 |
| Language | English |
| Publisher | FapUNIFESP (SciELO) |
| Publisher Date | 2013-04-02 |
| Access Restriction | Open |
| Subject Keyword | Ciência Rural Veterinary Sciences Intraocular Pressure Tono Pen Pen Xl Applanation Tonometers |
| Content Type | Text |
| Resource Type | Article |
| Subject | Veterinary Animal Science and Zoology Agronomy and Crop Science |
