Automated contact lens design through image capture of the eye

Patent metadata

Field	Value
Publication number	US-12186017-B2
Application number	US-202117223948-A
Country	US
Kind code	B2
Filing date	Apr 6, 2021
Priority date	Apr 6, 2021
Publication date	Jan 7, 2025
Grant date	Jan 7, 2025

Abstract

A method comprises capturing at least one image of an eye of a user; processing the at least one image to obtain at least one metric of the eye, wherein the obtained at least one metric comprises at least one of: a sagittal depth of the eye of the user for at least one semi-meridian radial distance outside the cornea, a diameter of the cornea of the eye, a position of a center of the pupil or first Purkinje image of the eye, a radius of curvature of the cornea, or a position of the lids of the eye, and an aperture height between the lids; and determining, based on the at least one metric, at least one parameter of a first contact lens to be worn on the eye with display eyewear or a second contact lens to be worn on the eye without the display eyewear.

First claim

What is claimed is:

1. A method comprising:
capturing at least one image of an eye of a user with an image sensor while the eye is illuminated;
processing the at least one image to obtain a plurality of metrics of the eye of the user, wherein the obtained plurality of metrics comprises:
a sagittal depth of the eye of the user for at least one semi-meridian radial distance outside the cornea,
a diameter of the cornea of the eye,
a position of a center of the pupil or first Purkinje image of the eye,
a radius of curvature of the cornea, and
a position of the lids of the eye, and an aperture height between the lids; and

determining, based on the plurality of metrics, at least one parameter of a first contact lens to be worn on the eye with display eyewear or a second contact lens to be worn on the eye without the display eyewear.

2. The method of claim 1 , further comprising:
disposing measurement eyewear on the face of a user prior to capturing the image, the measurement eyewear comprising the at least one light source, the image sensor, and a display, wherein the display is functional, partially-functional, or non-functional, and wherein the obtained plurality of metrics further comprises at least one of:
a vertex distance between an apex of a cornea of the eye and a spectacle plane of the measurement eyewear,
a pupillary distance between the center of the pupil of the eye and the center of the pupil of the other eye of the user,
a vertical position of the center of the pupil of the eye relative to the center of the display, or
the sagittal depth of at least one eye from the apex of the cornea to a point on at least one semi-chord radial distance outside the cornea.

3. The method of claim 1 , wherein determining at least one parameter of the first or second contact lens comprises:
determining a base curve of the first or second contact lens.

4. The method of claim 1 , wherein determining at least one parameter of the first or second contact lens comprises:
determining a diameter of the first or second contact lens based on the diameter of the cornea of the eye.

5. The method of claim 1 , wherein determining at least one parameter of the first or second contact lens comprises:
determining a sagittal depth of the first or second contact lens based on the sagittal depth of the eye.

6. The method of claim 1 , wherein determining at least one parameter of a contact lens comprises:
determining a non-rotation feature of the first or second contact lens based on the position of the lids of the eye, and/or the aperture height between the lids.

7. The method of claim 1 , wherein:
the obtained plurality of metrics further comprises the sagittal depth of the eye of the user for at least one semi-meridian radial distance outside the cornea; and
the method further comprises determining a sagittal depth feature of the first or second contact lens of the first or second contact lens based on the sagittal depth of the eye of the user for at least one semi-meridian radial distance outside the cornea.

8. The method of claim 1 , wherein:
the obtained plurality of metrics further comprises a position of the center of the pupil or first Purkinje image of the eye; and
determining the position of the center of the pupil or first Purkinje image of the eye comprises determining a location of a central optical feature of the contact lens based on the center of the pupil or first Purkinje image of the eye.

9. A non-transitory machine-readable storage medium encoded with instructions executable by a hardware processor of a computing component, the machine-readable storage medium comprising instructions to cause the hardware processor to perform operations comprising:
receiving at least one image of an eye of a user captured with an image sensor while the eye is illuminated;
processing the at least one image to obtain a plurality of metrics of the eye of the user, wherein the obtained plurality of metrics comprises:
a sagittal depth of the eye of the user for at least one semi-meridian radial distance outside the cornea,
a diameter of the cornea of the eye,
a position of a center of the pupil or first Purkinje image of the eye,
a radius of curvature of the cornea, and
a position of the lids of the eye, and an aperture height between the lids; and

determining, based on the plurality of metrics, at least one parameter of a first contact lens to be worn on the eye with display eyewear or a second contact lens to be worn on the eye without the display eyewear.

10. The non-transitory machine-readable storage medium of claim 9 , wherein:
the at least one image includes an image of measurement eyewear disposed on the face of the user, wherein the measurement eyewear comprises a display, wherein the display is functional, partially-functional, or non-functional, and wherein the obtained at least one metric further comprises at least one of:
wherein the obtained plurality of metrics further comprises at least one of:
a vertex distance between an apex of a cornea of the eye and a spectacle plane of the measurement eyewear,
a pupillary distance between the center of the pupil of the eye and the center of the pupil of the other eye of the user,
a vertical position of the center of the pupil of the eye relative to the center of the display, or
the sagittal depth of at least one eye from the apex of the cornea to a point on at least one semi-chord radial distance outside the cornea.

11. The non-transitory machine-readable storage medium of claim 9 , wherein determining at least one parameter of the first or second contact lens comprises:
determining a base curve of the first or second contact lens.

12. The non-transitory machine-readable storage medium of claim 9 , wherein determining at least one parameter of the first or second contact lens comprises:
determining a diameter of the first or second contact lens based on the diameter of the cornea of the eye.

13. The non-transitory machine-readable storage medium of claim 9 , wherein determining at least one parameter of the first or second contact lens comprises:
determining a sagittal depth of the first or second contact lens based on the sagittal depth of the eye.

14. The non-transitory machine-readable storage medium of claim 9 , wherein determining at least one parameter of a contact lens comprises:
determining a non-rotation feature of the first or second contact lens based on the position of the lids of the eye, and/or the aperture height between the lids.

15. The non-transitory machine-readable storage medium of claim 9 , wherein:
the obtained plurality of metrics further comprises the sagittal depth of the eye of the user for at least one semi-meridian radial distance outside the cornea; and
the operations further comprise determining a sagittal depth feature of the first or second contact lens based on the sagittal depth of the eye of the user for at least one semi-meridian radial distance outside the cornea.

16. The non-transitory machine-readable storage medium of claim 9 , wherein:
the obtained plurality of metrics further comprises a position of the center of the pupil or first Purkinje image of the eye; and
determining the position of the center of the pupil or first Purkinje image of the eye comprises determining a location of a central optical feature of the contact lens based on the center of the pupil or first Purkinje image of the eye.

17. A system, comprising:
a hardware processor; and
a non-transitory machine-readable storage medium encoded with instructions executable by t

Assignees

• Innovega Inc

Inventors

• Legerton Jerome
• Marsh Jay

Classifications

• A61B3/0008

  provided with illuminating means (A61B3/117, A61B3/14 take precedence) · CPC title

• A61B3/111

  for measuring interpupillary distance · CPC title

• A61B3/0041

  characterised by display arrangements · CPC title

• A61B3/14

  Arrangements specially adapted for eye photography · CPC title

• A61B3/11

  for measuring interpupillary distance or diameter of pupils · CPC title