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US 12,751,612 B2Granted
Eye tracking color vision tests
AssigneeVerily Health Inc.
InventorsSupriyo Sinha, Dimitri Azar, Kirk Gossage, Sam Kavusi, Prachi Shah, Alexandre Tumlinson
Life of this patent
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Abstract
Virtual reality, VR, headset-based and open-display based electronic systems that can be used to perform color vision tests. The systems may improve the sensitivity, consistency, and ease of application of the tests. Other aspects are also described.
Claims16
A system comprising:
- a VR headset comprising a left visible light display, a left compartment to fit over a left eye of a user, a right visible light display, a right compartment to fit over a right eye of the user, wherein the left and right compartments are configured so that when the headset has been fitted over the user's eyes a) the user cannot see the right display using only their left eye and b) the user cannot see the left display using only their right eye, and a non-visible light-based eye tracking subsystem that produces tracking data for the left eye and for the right eye, wherein the left and right compartments are opaque and configured to block ambient light originating external to the left and right compartments to create a light-controlled environment around the user's eyes;
- and
- a processor configured to, when the headset has been fitted over the user's eyes:
- i) signal the left or right visible light display to display i) a pseudo isochromatic plate, PIP, for a color vision test, and simultaneously ii) a plurality of user selectable figures;
- ii) use the tracking data from the eye tracking subsystem to record a tracked position of the right eye or a tracked position of the left eye as the right eye or the left eye moves while the PIP is being shown in i);
- iii) interpret the tracked position of the right eye or the left eye to determine a user selectable figure that has been selected by the user from amongst the plurality of user selectable figures;
- and
- iv) record an indication as to whether the user has seen a stimulus figure in the PIP, based on a comparison between the stimulus figure and user selectable figure.
5 more elements
A system comprising:
- a left visible light display;
- a left compartment to fit over a left eye of a user;
- a right visible light display;
- a right compartment to fit over a right eye of the user, wherein the left and right compartments are configured so that when the system-has been fitted over the user's eyes i) the user cannot see the right display using only their left eye and ii) the user cannot see the left display using only their right eye, wherein the left and right compartments are opaque and configured to block ambient light originating external to the left and right compartments to create a light-controlled environment around the user's eyes;
- a non-visible light-based eye tracking subsystem that produces tracking data for the left eye and for the right eye;
- and
- a processor configured to, when the system has been fitted over the user's eyes:
- i) signal the left or right visible light display to display a sequence of a plurality of plates, for an arrangement-type color vision test;
- ii) use the tracking data from the eye tracking subsystem to record a tracked movement of the right eye or a tracked movement of the left eye as the right eye or the left eye moves while the sequence is displayed in i);
- iii) interpret the tracked movement or detecting a blink of the right eye or the left eye as a) picking up a selected plate, of the plurality of plates, and then b) dragging the selected plate to a different position in the sequence and then c) putting down the selected plate in the different position;
- iv) repeat iii) a plurality of times to result in a re-arranged sequence of the plurality of plates;
- and
- v) evaluate the re-arranged sequence to determine a color vision score for the user.
10 more elements
Dependencies are inferred from the claim text.