PATIENT OPERATED TONOMETERS

摘要

An improved tonometer (10) provides for a bellows (96), and a stepper motor (92) to pressurize the interior of a probe (52) in the barrel (50) into which the probe (52) is fitted for moving the probe outward towards a patient's eye. The device also includes a laser (34) for improved centering of the patient's eye over the eye piece (20), and a safety detection device for terminating operation of the tonometer if the probe (52) fails to move along the barrel (50) after a given amount of pressure is applied to the interior of the barrel (50) and the probe (52). A rotatable occluder (25) near the head rest (22, 23) for blocking the eye not being tested, and a computer (130) in the instrument records the eye being tested and the test results.