Methods and systems for providing wavefront corrections for treating conditions including myopia, hyperopia, and/or astigmatism

• US 10,466,477 B2
• Filed: 09/19/2016
• Issued: 11/05/2019
• Est. Priority Date: 03/16/2015
• Status: Active Grant

• Current Assignee: Magic Leap, Inc.
• Original Assignee: Magic Leap, Inc.
• Inventors: Samec, Nicole Elizabeth, Macnamara, John Graham, Harrises, Christopher M., Schowengerdt, Brian T., Abovitz, Rony, Baerenrodt, Mark
• Primary Examiner(s): Tseng, Charles
• Application Number:
  US15/269,351
• Publication Number:
  US 20170000324A1
• Time in Patent Office: 1,142 Days
• CPC Class Codes: A61B 2562/0204 Acoustic sensors
• CPC Class Codes: A61B 2562/0219 Inertial sensors, e.g. accelerometers, gyroscopes, tilt switches
• CPC Class Codes: A61B 2562/0247 Pressure sensors
• CPC Class Codes: A61B 3/0008 provided with illuminating means A61B3/117 takes precedence; goniolenses used for laser treatment A61F9/009; illuminating means for optical instruments G02B27/00
• CPC Class Codes: A61B 3/0025 characterised by electronic signal processing, e.g. eye models
• CPC Class Codes: A61B 3/005 Constructional features of the display
• CPC Class Codes: A61B 3/022 for testing contrast sensitivity
• CPC Class Codes: A61B 3/024 for determining the visual field, e.g. perimeter types
• CPC Class Codes: A61B 3/028 for testing visual acuity; for determination of refraction, e.g. phoropters
• CPC Class Codes: A61B 3/0285 Phoropters
• CPC Class Codes: A61B 3/032 Devices for presenting test symbols or characters, e.g. test chart projectors A61B3/036 takes precedence
• CPC Class Codes: A61B 3/036 for testing astigmatism
• CPC Class Codes: A61B 3/063 for testing light sensitivity, i.e. adaptation
• CPC Class Codes: A61B 3/066 for testing colour vision
• CPC Class Codes: A61B 3/08 for testing binocular or stereoscopic vision, e.g. strabismus
• CPC Class Codes: A61B 3/085 for testing strabismus
• CPC Class Codes: A61B 3/10 Objective types, i.e. instruments for examining the eyes independent of the patients' perceptions or reactions
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• CPC Class Codes: A61B 3/101 for examining the tear film
• CPC Class Codes: A61B 3/1015 for wavefront analysis
• CPC Class Codes: A61B 3/102 : for optical coherence tomography [OCT]
• CPC Class Codes: A61B 3/1035 : for measuring astigmatism testing astigmatism A61B3/036
• CPC Class Codes: A61B 3/113 : for determining or recording eye movement
• CPC Class Codes: A61B 3/12 : for looking at the eye fundus, e.g. ophthalmoscopes A61B3/13 takes precedence
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• CPC Class Codes: A61B 3/13 : Ophthalmic microscopes
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• CPC Class Codes: A61B 5/0066 : Optical coherence imaging
• CPC Class Codes: A61B 5/0077 : Devices for viewing the surface of the body, e.g. camera, magnifying lens
• CPC Class Codes: A61B 5/01 : Measuring temperature of body parts ; Diagnostic temperature sensing, e.g. for malignant or inflamed tissue clinical contact thermometers G01K13/20
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• CPC Class Codes: A61B 5/361 : Detecting fibrillation
• CPC Class Codes: A61B 5/369 : Electroencephalography [EEG] devices for psychotechnics A61B5/16
• CPC Class Codes: A61B 5/398 : Electrooculography [EOG], e.g. detecting nystagmus; Electroretinography [ERG]
• CPC Class Codes: A61B 5/6803 : Head-worn items, e.g. helmets, masks, headphones or goggles
• CPC Class Codes: A61B 8/10 : Eye inspection
• CPC Class Codes: A61B 8/461 : Displaying means of special interest
• CPC Class Codes: A61F 2007/0004 : Eyes or part of the face surrounding the eyes
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• CPC Class Codes: A61M 2205/3375 : Acoustical, e.g. ultrasonic, measuring means
• CPC Class Codes: A61M 2205/507 : Head Mounted Displays [HMD]
• CPC Class Codes: A61N 2005/0648 : the light being directed to the eyes
• CPC Class Codes: G02B 2027/0138 : comprising image capture systems, e.g. camera
• CPC Class Codes: G02B 2027/014 : comprising information/image processing systems
• CPC Class Codes: G02B 2027/0185 : Displaying image at variable distance
• CPC Class Codes: G02B 21/0032 : Optical details of illumination, e.g. light-sources, pinholes, beam splitters, slits, fibers G02B21/0036 - G02B21/008; means for illumination of specimens in general G02B21/06
• CPC Class Codes: G02B 27/0093 : with means for monitoring data relating to the user, e.g. head-tracking, eye-tracking
• CPC Class Codes: G02B 27/0172 : characterised by optical features
• CPC Class Codes: G02B 27/0179 : Display position adjusting means not related to the information to be displayed
• CPC Class Codes: G02C 7/027 : considering wearer's parameters
• CPC Class Codes: G06T 19/006 : Mixed reality object pose determination, tracking or camera calibration for mixed reality G06T7/00
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• CPC Class Codes: G06T 2207/10148 : Varying focus
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• CPC Class Codes: G06T 2207/30041 : Eye; Retina; Ophthalmic
• CPC Class Codes: G16H 20/17 : delivered via infusion or injection
• CPC Class Codes: G16H 40/63 : for local operation
• CPC Class Codes: G16H 40/67 : for remote operation
• CPC Class Codes: G16H 50/20 : for computer-aided diagnosis, e.g. based on medical expert systems

Abstract

Configurations are disclosed for a health system to be used in various healthcare applications, e.g., for patient diagnostics, monitoring, and/or therapy. The health system may comprise a light generation module to transmit light or an image to a user, one or more sensors to detect a physiological parameter of the user'"'"'s body, including their eyes, and processing circuitry to analyze an input received in response to the presented images to determine one or more health conditions or defects.

Claims

1. A wearable ophthalmic device comprising:

an augmented reality head-mounted display system configured to pass light from the world through the display and into an eye of a person wearing the head-mounted display system;

a light source configured to emit image light for propagation into the eye of the person to form an image in the eye; and

an adaptable optics element configured to apply a wavefront correction to the image light from the light source forming the image based on an optical prescription for the eye,

wherein the head-mounted display system comprises a waveguide stack comprising a plurality of waveguides configured to receive the image light from the light source and output the image light with wavefront divergence corresponding to different depth planes, and

wherein the waveguide stack is configured to provide image content at the different depth planes.

2. The device of claim 1, wherein the adaptable optics element comprises a variable focus element and wherein the variable focus element comprises a membrane mirror.

3. The device of claim 2, further comprising:

one or more electrodes coupled to the membrane mirror; and

a control system configured to selectively control the one or more electrodes to modify a shape of the membrane mirror based on a corneal shape of the eye.

4. The device of claim 1, further comprising a processor configured to modify image information provided to the light source for output as the image light from the light source propagated into the eye, wherein the image information is modified to provide the wavefront correction based on the optical prescription for the eye.

5. A method for addressing vision defects of a person wearing a head mounted display system, the method comprising:

identifying an optical prescription of the person;

producing an image using a display in the head mounted display system;

applying wavefront correction to light forming the image based on the optical prescription to yield a corrected image; and

displaying the corrected image to the person wearing the head mounted display,

wherein the display comprises a waveguide stack comprising a plurality of waveguides configured to output the light with wavefront divergence corresponding to different depth planes, and

wherein the waveguide stack is configured to provide image content at the different depth planes.

6. The method of claim 5, wherein identifying the optical prescription of the person comprises receiving input from the person specifying the optical prescription.

7. The method of claim 5, wherein identifying the optical prescription of the person comprises presenting the person with different wavefront corrections.

8. The method of claim 7, further comprising receiving input from the person specifying a preferred correction.

9. The method of claim 5, wherein the wavefront correction is implemented by adjusting adaptive optics in the head mounted display.

10. The method of claim 9, wherein the adaptive optics comprises a variable focus element.

11. The method of claim 9, wherein the adaptive optics comprises a deformable optical element.

12. The method of claim 11, wherein the deformable optical element comprises a deformable mirror.

13. The method of claim 5, wherein the waveguides in the waveguide stack include static optical elements having optical power.

14. The method of claim 5, wherein the wavefront correction is applied to an augmented reality image.

15. The method of claim 5, wherein the wavefront correction is implemented by directing the image through at least one waveguide.

16. The method of claim 15, wherein the at least one waveguide includes a dynamic optical element having variable optical power.

17. A wearable ophthalmic device comprising:

a light source and wearable optics configured to direct light into an eye of a person wearing the wearable optics to form an image in the eye, the wearable optics configured to provide prescription refractive correction to the image based on an optical prescription for the person'"'"'s eye, wherein;

the wearable optics comprise a waveguide stack comprising a plurality of waveguides configured to output the light having wavefront divergence corresponding to different depth planes, and

the wearable optics is configured to provide different image content at the different depth planes.

18. The device of claim 17, further comprising user interface controls configured to receive input from the person specifying the person'"'"'s optical prescription.

19. The device of claim 17, configured to present the person with different wavefront corrections to identify the optical prescription of the person.

20. The device of claim 19, further comprising a user interface configured to receive input from the person specifying a preferred correction.

21. The device of claim 17, wherein the wearable optics comprises adaptive optics in the wearable optics configured to be adjusted to implement the prescription refractive correction.

22. The device of claim 21, wherein the adaptive optics comprises a variable focus element.

23. The device of claim 21, wherein the adaptive optics comprises a deformable optical element.

24. The device of claim 23, wherein the deformable optical element comprises a deformable mirror.

25. The device of claim 17, wherein the waveguide stack is configured to provide the prescription refractive correction.

26. The device of claim 17, wherein the plurality of waveguides in the waveguide stack comprises one or more waveguides that provide a desired optical power to provide the prescription refractive correction, the prescription refractive correction being implemented by directing the light through the one or more waveguides.

27. The device of claim 17, wherein the waveguides include static optical elements having optical power.

28. The device of claim 17, wherein the light forming the different image content propagates through a different number of waveguides thereby providing different levels of optical power for the different image content.

29. The device of claim 17, wherein the at least one waveguide includes a dynamic optical element having variable optical power.

30. The device of claim 17, further comprising a sensor to determine an orientation of the person'"'"'s head, wherein the wearable optics is configured to alter a focus of the image, as formed in the eye, based on the head orientation.

31. The device of claim 17, further comprising an eye tracking system configured to determine a person'"'"'s convergence point.

32. The device of claim 31, wherein the wearable optics is configured to alter a focus of the image, as formed in the eye, based on the determined convergence point.

33. The device of claim 17, wherein the wearable optics is part of an augmented reality system, the wearable optics configured to provide the prescription correction to augmented reality image content.