Patent ID: 7101335
Filing Date: 2006-09-05
Classification: A61B

Abstract:
1. A non-contact type tonometer including: fluid blowing means which blows fluid against a cornea of an eye of an examinee; intraocular pressure measurement means which detects a deformed state of the cornea caused by the blown fluid and determines intraocular pressure of the examinee's eye based on a result of detection of the deformed state; pulsation detection means which detects pulsation of the examinee; measurement timing determination means which can determine a measurement timing based on the detected pulsation; command signal input means which inputs a command signal for execution of intraocular pressure measurement; control means which outputs a control signal for controlling driving of the fluid blowing means based on the determined measurement timing and the input command signal; and mode selection means which includes a first mode and a second mode, the mode selection means selecting one of the first mode for obtaining a measurement value of the intraocular pressure at a measurement timing corresponding to at least one of a peak point in a phase of pulsation, a bottom point in the phase of pulsation and an arbitrary point in the phase of pulsation and the second mode for obtaining a measurement value of the intraocular pressure at a first measurement timing corresponding to the peak point and a measurement value of the intraocular pressure at a second measurement timing corresponding to the bottom point, wherein when the second mode is selected, the measurement timing determination means determines the first measurement timing based on the peak point in the phase of the detected pulsation and the second measurement timing based on the bottom point in the phase of the detected pulsation.