Tonometer calibration tool

A calibration apparatus for a non-contact tonometer operable to measure intraocular pressure of an eye by discharging an air pulse at the eye to applanate a cornea of the eye, the non-contact tonometer including a measurement head and a nosepiece carried by the measurement head, the nosepiece including a fluid discharge passage for discharging the air pulse along a test axis at the cornea, wherein the measurement head and nosepiece are movable as a unit relative to the cornea to align the test axis with the cornea, the calibration apparatus comprising:

• a body having a mating feature configured for removably mounting the body on the nosepiece or on the measurement head;
• a pressure sensor carried by the body and arranged to receive the air pulse when the body is mounted on the nosepiece or on the measurement head, the pressure sensor providing a pressure signal in response to the air pulse;
• and
• a radiation emitter carried by the body, wherein the radiation emitter provides a pseudo-applanation event when the pressure signal reaches a predetermined level, the pseudo-applanation event being detectable by the non-contact tonometer as though an actual corneal applanation had taken place;
• wherein the mating feature of the body includes a pair of mounting pins sized for receipt by a corresponding pair of mounting holes in the measurement head;
• and
• wherein the body includes a mounting block from which the pair of mounting pins extend, a sensor portion for housing the pressure sensor and the emitter, and a bridge member connecting the sensor portion to the mounting block.