Patent ID: 11966511
Assignee: ACADEMISCH ZIEKENHUIS GRONINGEN
Field: Medical technology (Instruments)
Classification: CPC A  G | IPC G

Claim 16:
17. A system for measuring quality of view over a visual field of view of an eye, the system comprising:
a display;
an eye-tracker for tracking gaze positions in a direction of view of an eye on the display;
a data processor system including a video display controller, connected to the display for controlling the display for displaying a visual stimulus to be followed in a stimulus position moving over the display and connected to the eye tracker for receiving data representing the gaze positions from the eye tracker, the data processor system being programmed for, during a measuring period:
causing the display to display the stimulus to be followed to be displayed in the stimulus positions,
receiving data representing the gaze positions from the eye-tracker,
causing the display to move the stimulus to be followed over the display in varying directions and registering the stimulus positions over time,
registering the received gaze positions over time,
determining and registering deviations between the gaze positions and associated ones of the stimulus positions where the stimulus to be followed was displayed when the gaze position was detected and magnitudes of the deviations, and
determining a visual field map of field portions, wherein, for each of said field portions, quality of view is determined in accordance with the quality of view estimates of associated ones of the registered deviations of which the associated stimulus positions are located relative to the gaze position so that the associated stimulus positions are in that field portion, and, for each of said associated ones of the registered deviations, the quality of view is estimated in accordance with the magnitude of that associated one of the registered deviations and with magnitudes of at least preceding or succeeding ones of the registered deviations.