Automated perimeter
AssigneeOcuspecto Oy
InventorsTapio Mantysalo, Markku Leinonen
Life of this patent
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Abstract
The invention relates to a perimeter or a campimeter with a visible fixation point and a method used in them. The method comprises at least the following steps: producing a fixation point having a first visual appearance to be shown to a patient; producing a stimulus shown to the patient at a stimulus time-point at a pre-defined location; activating a response device by the patient upon noticing the stimulus at a response time-point; changing the fixation point to have a second visual appearance for a fixation point second visual appearance time interval near the stimulus time-point.
Claims11
A method used in a standard automated perimetry (SAP) perimeter or campimeter with a visible fixation point, the method comprising at least the following steps:
- producing a fixation point (101) having a first visual appearance (101a) to be shown to a patient (100);
- producing a stimulus (105) shown to the patient at a stimulus time-point at a pre-defined location;
- activating a response device (103) by the patient upon noticing the stimulus at a response time-point;
- further comprising
- changing the fixation point to have a second visual appearance (101b) for a fixation point second visual appearance time interval near the stimulus time-point by starting the fixation point second visual appearance time interval not earlier than 1 second before the stimulus time-point;
- and
- changing the fixation point back to have the first visual appearance (101a) after the fixation point second visual appearance time interval has ended or after patient has responded.
A standard automated perimetry (SAP) perimeter or campimeter with a visible fixation point comprising
- means for producing a fixation point (101) having a first visual appearance (101a) to be shown to a patient (100);
- means for producing a stimulus (105) shown to the patient at a stimulus time-point;
- a response device (103) adapted to be activated by the patient upon noticing the stimulus at a response time-point;
- characterized in that the means for producing a fixation point are arranged to
- change the fixation point to have a second visual appearance (101b) for a fixation point second visual appearance time interval near the stimulus time-point, starting the fixation point second visual appearance time interval not earlier than 1 second before the stimulus time-point;
- change the fixation point back to have the first visual appearance (101a) after the fixation point second visual appearance time interval has ended or after patient has responded.
Dependencies are inferred from the claim text.