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Fundus blood flow metering method

  • US 6,302,850 B1
  • Filed: 09/08/1999
  • Issued: 10/16/2001
  • Est. Priority Date: 09/10/1998
  • Status: Active Grant
First Claim
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1. A method for measuring the blood flow of a fundus blood vessel on an eye to be examined, by irradiating the blood vessel with a light beam, detecting scattered and reflected light from the irradiated vessel, and calculating the velocity of the blood flow based on the detection, said method comprising the steps of:

  • executing a first measurement of the blood flow while irradiating the blood vessel with a light beam from a first direction;

    carrying out alignment related to the eye after executing the first measurement in said first measurement executing step;

    allowing an operator to confirm the alignment state and awaiting the operator'"'"'s order; and

    executing a second measurement of the blood flow, based on the operator'"'"'s order, while irradiating the blood vessel with a light beam from a second direction different from the first direction.

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