Patent ID: 9560966
Date: 2017-02-07
CPC Classifications: A61B

Claim:
1. A non-contact type tonometer comprising: a measurement unit including a first measuring unit configured to measure an eye pressure of an examinee's eye in a non-contact manner and a second measuring unit configured to measure a corneal thickness of the examinee's eye in a non-contact manner; a moving mechanism configured to cause relative movement of the measurement unit with respect to the examinee's eye; a drive controller configured to drive the moving mechanism for aligning the measurement unit; a setting switch controller configured to switch an alignment reference on the cornea used for aligning the measurement unit between a first alignment reference and a second alignment reference, the first alignment reference is a reference for measuring the eye pressure with the first measuring unit, the second alignment reference is a reference for measuring the corneal thickness with the second measuring unit and set closer to a corneal rear surface than the first alignment reference, and the setting switch controller sets the first alignment reference on a corneal front surface of the examinee's eye, and sets the second alignment reference on the corneal rear surface or in the vicinity of the corneal rear surface, and a first sensor configured to detect the position of the measurement unit during alignment using the first alignment reference; and a second sensor configured to detect the position of the measurement unit during alignment using the second alignment reference, wherein the drive controller changes the sensor used upon switching of the alignment reference.