GOLDMANN TONOMETRY CHECKS.

Optometric Physician
SOURCE: Kumar N, Jivan S. Goldmann applanation tonometer calibration error checks: current practice in the UK. Eye 2006; Mar 31 [Epub ahead of print].

Ophthalmology residents in England were surveyed and it was determined that:

"Only seven percent said they perform checks at the start of each clinical session, and eight percent check the tonometer for calibration errors if they had suspicious or unexpected measurements."

The summary in Optometric Physician concludes:

"Tonometers should be checked for calibration errors at least monthly."

We have biomed staff that maintains our equipment, but I don't know how often they calibrate our tonometers. I know it's not once a month. I honestly don't know how to calibrate the tonometer.