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Publication Number
US-11617510-B2
Publication Date
2023-04-04
Expiration Date
Abstract
A method for assessing glaucoma in a patient may involve measuring an intraocular pressure of the patient and measuring an intracranial pressure in the patient, using a noninvasive eye tracking system. The method may then involve comparing the intraocular pressure to the intracranial pressure and assessing glaucoma in the patient, based on the comparing of the intraocular pressure to the intracranial pressure.
Core Innovation
The invention relates to assessing glaucoma by using a two-pressure model that compares intraocular pressure with intracranial pressure. An intraocular pressure of a patient is obtained, and an intracranial pressure in the patient is measured using a non-contacting eye tracking system having an eye movement tracking camera spaced from the patient.
After the intraocular pressure and the intracranial pressure are obtained, the invention compares the intraocular pressure to the intracranial pressure. The assessing of glaucoma is performed based on the comparison of intraocular pressure to intracranial pressure, and in some embodiments the intracranial pressure is derived based on a patient's ability to track a moving video on a stimulus screen using a processor of the eye tracking system.
The invention further provides glaucoma risk categories based on the pressures. The comparison can use a ratio of the intraocular pressure to the intracranial pressure and determine whether the result indicates a high risk, a low risk, or no risk of glaucoma, including identifying low-tension glaucoma and differentiating glaucoma risk levels.
Claims Coverage
The partial content provides two independent claims: a method claim and a system claim. Across these independent claims, the core coverage includes measuring intracranial pressure using a non-contact eye tracking system, obtaining intraocular pressure, comparing intraocular pressure with intracranial pressure, and assessing glaucoma based at least in part on the comparison.
Obtaining intraocular pressure and measuring intracranial pressure by non-contact eye tracking
A method comprising obtaining an intraocular pressure of the patient; measuring an intracranial pressure in the patient using a non-contacting eye tracking system having an eye movement tracking camera spaced from the patient; comparing the intraocular pressure to the intracranial pressure; and assessing glaucoma in the patient based on the comparing of the intraocular pressure to the intracranial pressure.
System with intraocular pressure device, non-contact eye tracking device, and processor-based comparison and assessment
A system comprising an intraocular pressure measurement device; a non-contacting, eye tracking measurement device having an eye movement tracking camera; and a processor coupled with the intraocular pressure measurement device and the eye tracking measurement device, wherein the processor is configured to calculate an intracranial pressure based on eye tracking measurement with the eye movement tracking camera, compare a measured intraocular pressure with the calculated intracranial pressure, and assess glaucoma based at least in part on the comparison.
Overall, the independent claims require obtaining and/or measuring intraocular pressure, measuring or calculating intracranial pressure using a non-contact eye tracking system with an eye movement tracking camera spaced from the patient, comparing intraocular pressure with intracranial pressure, and assessing glaucoma based on that comparison.
Stated Advantages
Not explicitly described in patent.
Documented Applications
Not explicitly described in patent.
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