Process for customizing an active contact lens
A method for customizing active contact lenses, such as contact lens displays, for a plurality of wearers includes the following: Contact lens precursors are obtained for a plurality of wearers. The contact lens precursors include active electronics. The same contact lens precursors are used as a starting point to generate active contact lenses for many different individuals, but they are processed into active contact lenses that are customized for each individual wearer.
1. A method for customizing scleral contact lens displays for a plurality of wearers, each scleral contact lens display comprising a scleral contact lens containing a projector that projects images onto a retina of an individual wearer's eye, the method comprising:
obtaining contact lens precursors for the plurality of wearers, each contact lens precursor including the projector that projects images onto the retina of the individual wearer's eye, wherein the contact lens precursors are the same for the plurality of wearers; and
processing the contact lens precursors into scleral contact lens displays customized for each individual wearer, comprising:
custom shaping a posterior surface of the contact lens precursor to rest upon and conform to a shape of each individual wearer's sclera, wherein the scleral contact lens arches over the individual wearer's cornea when resting upon the individual wearer's sclera and the custom shape of the posterior surface resting upon the individual wearer's sclera prevents the scleral contact lens from slipping with respect to the individual wearer's eye and prevents the images projected by the projector from slipping with respect to the individual wearer's retina.
2. The method of claim 1 where the contact lens precursor includes all of the electronics and optical components of the final contact lens display.
3. The method of claim 1 where the contact lens precursor further includes a camera.
4. The method of claim 1 where the contact lens precursor includes a coil and/or an antenna.
5. The method of claim 1 where the contact lens precursor includes a battery.
6. The method of claim 1 where a body of the contact lens precursor is made out of a rigid gas permeable material.
7. The method of claim 1 where processing the contact lens precursors comprises processing the contact lens precursors to produce refractive vision correction customized for each individual wearer.
8. The method of claim 7 where processing the contact lens precursors comprises shaping anterior surfaces of the contact lens displays to produce refractive vision correction customized for each individual wearer.
9. The method of claim 8 where shaping the anterior surfaces comprises molding or casting the anterior surfaces.
10. The method of claim 8 where shaping the anterior surfaces comprises shaping the anterior surfaces by machining on a lathe.
11. The method of claim 1 where custom shaping the posterior surfaces comprises custom shaping the posterior surfaces by machining on a lathe.
12. The method of claim 1 where the contact lens precursors are obtained by a contact lens lab from a manufacturer of the contact lens precursors, and processing the contact lens precursors is performed by the contact lens lab.
13. The method of claim 1 where the images projected by the projector appear superimposed on a real view of the individual wearer.
14. The method of claim 1 where the custom shape of the posterior surface for each individual wearer is expressed as a set of annular zones and a radius of curvature for each zone.
15. The method of claim 1 where the custom shape of the posterior surface for each individual wearer is expressed as an elevation map of a shape of the individual wearer's eye.
16. The method of claim 1 where the custom shape of the posterior surface for each individual wearer is expressed as a point cloud of a shape of the individual wearer's eye.
17. The method of claim 1 where the custom shape of the posterior surface for each individual wearer is not limited to symmetric shapes.
18. The method of claim 1 where the custom shape of the posterior surface for each individual wearer further arches over a cornea of the individual wearer's eye without contacting the cornea.
19. The method of claim 18 where the custom shape of the posterior surface for each individual wearer arches over the cornea with a gap of not more than 100 microns.