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US 12,642,429 B2Granted
Tear meniscus detection and evaluation system
AssigneeGlobe Biomedical, Inc.
InventorsJoshua Park, Rehan Ahmed, Douglas Suitt
Life of this patent
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Abstract
A spectacles-mounted ophthalmic monitoring system may include a spectacles frame comprising a left rim and a right rim, an image sensor coupled with the spectacles frame to capture images of a field of view of an eye, and a processor. The processor may be configured to activate the image sensor to capture an image of the field of view, and identify a height of a tear film meniscus within the field of view of one or more images within the series of images.
Claims20
An ophthalmic monitoring system comprising:
- an eyeglasses frame comprising a left rim and a right rim, at least one of one of the left rim and the right rim comprising a sensor enclosure oriented toward an eye of a wearer when the eyeglasses frame is worn;
- an image sensor disposed in the sensor enclosure to capture images of an eye from within the sensor enclosure;
- and
- a processor configured to:
- activate the image sensor to capture a plurality of images of the eye;
- detect a first state in which the eyeglasses frame is being worn;
- detect a second state in which the eyeglasses frame has been removed from a head of the wearer;
- tag a first image of the plurality of images captured by the image sensor, the first image being captured at a first time when the first state is detected and before the detection of the second state indicating that the eyeglasses frame has been removed from the head of the wearer;
- tag a second image of the plurality of images captured by the image sensor, the second image being captured at a second time after the second state has been detected and after the first state is once again detected after the second state is detected;
- determine a pre-drop average tear film height by analyzing images from the image sensor during a period of time including the first time but prior to the second time;
- and
- determine an eyedrop effect by determining a second tear film height by analyzing the second image that is tagged and comparing the second tear film height with the pre-drop average tear film height.
9 more elements
An ophthalmic monitoring system comprising:
- an eyeglasses frame comprising a left rim and a right rim, at least one of one of the left rim and the right rim comprising a sensor enclosure oriented toward an eye of a wearer when the eyeglasses frame is worn;
- an image sensor disposed in the sensor enclosure to capture images of an eye from within the sensor enclosure;
- and
- a processor configured to:
- activate the image sensor to capture a plurality of images of the eye;
- detect a first state in which the eyeglasses frame is being worn;
- detect a second state in which the eyeglasses frame has been removed from a head of the wearer;
- tag a first image of the plurality of images captured by the image sensor, the first image being captured at a first time when the first state is detected and before the detection of the second state indicating that the eyeglasses frame has been removed from the head of the wearer;
- tag a second image of the plurality of images captured by the image sensor, the second image being captured at a second time after the second state has been detected and after the first state is once again detected after the second state is detected;
- segment the second image into an eye portion and a background portion;
- identify, within the eye portion, a location of a lower eyelid;
- identify, within the eye portion, an upper edge of a tear film meniscus;
- and
- determine a height of the tear film meniscus based on the location of the lower eyelid and a location of the upper edge of the tear film meniscus.
11 more elements
An ophthalmic monitoring system comprising:
- an eyeglasses frame comprising a left rim and a right rim, at least one of one of the left rim and the right rim comprising a sensor enclosure oriented toward an eye of a wearer when the eyeglasses frame is worn;
- an image sensor disposed in the sensor enclosure to capture images of an eye from within the sensor enclosure;
- and
- a processor configured to:
- activate the image sensor to capture a plurality of images of the eye;
- detect a first state in which the eyeglasses frame is being worn;
- detect a second state in which the eyeglasses frame has been removed from a head of the wearer;
- tag a first image of the plurality of images captured by the image sensor, the first image being captured at a first time when the first state is detected and before the detection of the second state indicating that the eyeglasses frame has been removed from the head of the wearer;
- tag a second image of the plurality of images captured by the image sensor, the second image being captured at a second time after the second state has been detected and after the first state is once again detected after the second state is detected;
- determine an interpupillary distance based on output of the image sensor;
- determine, based on the interpupillary distance, a distance of a wearer from a near-field object;
- and
- generate output representing the distance of the wearer from the near-field object.
10 more elements
Dependencies are inferred from the claim text.