The calibration of the Goldmann applanation tonometer should be checked at which settings?

The Goldmann applanation tonometer is a widely used instrument for measuring intraocular pressure (IOP) in ophthalmology. Calibration is an essential aspect of ensuring accurate readings. The settings for calibration are crucial because they provide a range that helps assess the device’s performance across typical measurement levels.

In this case, testing the calibration at settings of 0, 2, and 6 represents a logical approach because these values cover a suitable range relevant to IOP measurements in clinical practice. Setting zero helps establish a baseline without any pressure. The additional two points at 2 and 6 correspond to typical IOP values seen in patients, allowing for verification that the tonometer gives accurate pressure readings in a clinically relevant range.

The chosen settings are optimal for ensuring that the device maintains its accuracy across a spectrum of expected IOP levels, which is essential for reliable monitoring and assessment of patients' eye health.