Evaluation of the Perkins handheld applanation tonometer in the measurement of intraocular pressure in dogs and cats.

Objective: To evaluate and to validate the accuracy of the Perkins handheld applanation tonometer in the measurement of IOP in dogs and cats.

Animals: Twenty eyes from 10 dogs and 10 cats immediately after sacrifice were used for the postmortem study and 20 eyes from 10 clinically normal and anesthetized dogs and cats were used for the in vivo study. Both eyes of 20 conscious dogs and cats were also evaluated.