A study was conducted to evaluate if a simple calibration check could effectively identify Goldmann applanation tonometers (GATs) that meet acceptable calibration standards according to professional guidelines from APGS and WGA.
Seventy-six GATs were tested for calibration error at different pressure levels, utilizing two screening criteria to determine their accuracy.
Results indicated that a calibration error of ±1 mm Hg at the 0 mm Hg level is a useful screening method for identifying GATs that conform to APGS calibration standards, although a significant number failed to meet WGA criteria.