1Assistant Professor, Department of Veterinary Surgery and Radiology, College of Veterinary and Animal Sciences, Pookot, Wayanad (Kerala)
2Associate Professor, Department of Veterinary Surgery and Radiology, Madras Veterinary College, Chennai
3Professor, Department of Veterinary Surgery and Radiology, Madras Veterinary College, Chennai
4Professor and Head, Department of Veterinary Surgery and Radiology, Madras Veterinary College, Chennai
Tamil Nadu University of Veterinary and Animal Sciences, Chennai (TN)
*Corresponding author: E-mail: sooryadas@yahoo.com
Online published on 18 December, 2012.
In a prospective study, intra-ocular pressure (IOP) was measured in 13 glaucomatous eyes of dogs with an applanation tonometer, and the Schiotz indentation tonometer. The readings obtained with the Schiotz tonometer using 5.5 g and 7.5g weights were converted to IOP estimates using the human and canine calibration tables, and compared with each other and to those obtained with the applanation tonometer. IOP estimates using 7.5 g weight and converted with canine and human calibration tables, and 5.5 g weight and converted with canine calibration table were significantly higher than those obtained with applanation tonometer. IOP estimates using Schiotz 5.5 g weight and converted using human calibration table did not vary significantly than those obtained with the applanation tonometer. Measurements obtained with the Schiotz tonometer, using either weight, and converted using the human calibration table were significantly lower than those obtained with either weight and the canine calibration table.
Applanation tonometer, Calibration table, Dog, Glaucoma, Schiotz tonometer
