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Noncontact type tonometer

  • US 5,092,334 A
  • Filed: 06/29/1988
  • Issued: 03/03/1992
  • Est. Priority Date: 06/30/1987
  • Status: Expired due to Term
First Claim
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1. A noncontact type tonometer comprising fluid projecting means for projecting a fluid toward an eye-to-be-tested, eye pressure measuring means for obtaining a measured value of the eye-to-be-tested from a relation between a transfiguring quantity of the eye-to-be-tested and the pressure of the fluid, pulse wave detecting means for detecting a pulse wave of a person-to-be-tested, and calculating means coupled to the pulse wave detecting means and said eye pressure measuring means for determining at least one of the maximum eye pressure value, minimum eye pressure value and average eye pressure value of the eye-to-be-tested through calculation with reference to the maximum fluctuation width of the pulse wave detected by the pulse wave detecting means, the pulse wave fluctuating quantity at the time point when the measurement of the eye pressure is carried out by the eye pressure measuring means, and the measured value of the eye pressure.

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