Patent ID: 6053867
Filing Date: 2000-04-25
Classification: A61B

Abstract:
A noncontact tonometer which measures intraocular pressure of a subject's eye after measuring the thickness of the cornea of the eye, said noncontact tonometer comprising:a position detecting means for detecting the position of the noncontact tonometer relative to the cornea by projecting a light beam on the cornea and detecting the reflected light beam reflected from the cornea;a corneal thickness measuring means for measuring the thickness of the cornea by projecting a light beam on the cornea and detecting the reflected light beam reflected from the cornea;a storage means for storing positional information provided by the position detecting means when the thickness of the cornea is measured by the corneal thickness measuring means;an intraocular pressure measuring means for measuring the intraocular pressure of the eye by applying an air pulse to the cornea and optically detecting an amount of deformation of the cornea;a comparing means for comparing the positional information provided by the position detecting means and the positional information stored in the storage means after the measurement of the thickness of the cornea by the corneal thickness measuring means; anda control means for controlling an operation for applying an air pulse to the cornea by deciding on the basis of information provided by the comparing means and representing the result of comparison whether or not intraocular pressure measurement is to be executed following corneal thickness measurement.