Scleral contact lens manufacturing

• US 8,632,188 B1
• Filed: 10/19/2011
• Issued: 01/21/2014
• Est. Priority Date: 10/19/2011
• Status: Active Grant

• Current Assignee: Gemoules, Gregory
• Original Assignee: Gemoules, Gregory
• Inventors: Gemoules, Gregory
• Primary Examiner(s): MAI, HUY KIM
• Application Number:
  US13/277,139
• Time in Patent Office: 825 Days
• Field of Search: 351/200, 351/205, 351/212, 351/219, 351/246, 351/247
• US Class Current: 351/247
• CPC Class Codes: A61B 3/103 for determining refraction, e.g. refractometers, skiascopes
• CPC Class Codes: A61B 3/107 for determining the shape or measuring the curvature of the cornea
• CPC Class Codes: A61B 3/125 with contact lenses contact lenses per se G02C7/04
• CPC Class Codes: B23B 5/36 for turning specially-shaped surfaces by making use of relative movement of the tool and work produced by geometrical mechanisms, i.e. forming-lathes
• CPC Class Codes: G02C 2202/20 Diffractive and Fresnel lenses or lens portions
• CPC Class Codes: G02C 7/027 considering wearer's parameters
• CPC Class Codes: G02C 7/047 Contact lens fitting; Contact lenses for orthokeratology; Contact lenses for specially shaped corneae
• CPC Class Codes: Y10T 82/2502 with program control

Abstract

The different illustrative embodiments provide a method, computer program product, and apparatus for manufacturing a scleral contact lens. A number of dimensions for the scleral lens is generated based on a shape of an eye. An alteration to a first wavefront of light caused by the first wavefront of light traveling through a pupil of the eye is identified. A modification configured to be made to a posterior surface of the scleral lens is generated based on the alteration. The modification removes the alteration for a second wavefront of light traveling through the scleral lens and the pupil of the eye.

Claims

1. A method for manufacturing a scleral lens, the method comprising:

generating a number of dimensions for the scleral lens based on a shape of an eye;

identifying an alteration to a first wavefront of light caused by the first wavefront of light traveling through a pupil of the eye; and

generating a modification configured to be made to a posterior surface of the scleral lens based on the alteration, wherein the modification removes the alteration for a second wavefront of light traveling through the scleral lens and the pupil of the eye.

2. The method of claim 1, further comprising:

applying the modification to the posterior surface of the scleral lens.

3. The method of claim 2, wherein applying the modification to the posterior surface of the scleral lens comprises:

removing material from the posterior surface of the scleral lens according to the modification.

4. The method of claim 1, wherein identifying the alteration to the first wavefront of light caused by the first wavefront of light traveling through the pupil of the eye comprises:

identifying a difference in a plurality of optical paths traveled by the light as the light travels through a plurality of areas of the pupil of the eye to form the alteration to the first wavefront of light.

5. The method of claim 4, wherein generating the modification configured to be made to the posterior surface of the second portion of the scleral lens based on the alteration comprises:

identifying a thickness of a portion of the scleral lens for each of the plurality of areas that equalizes the difference in the number of optical paths.

6. The method of claim 1, wherein the scleral lens comprises an optical section and a scleral section.

7. The method of claim 6, wherein the modification is configured to be made to the posterior surface of the optical section of the scleral lens, and further comprising:

positioning the scleral section of the scleral lens in contact with a sclera of the eye, wherein a space is present between the optical section of the scleral lens and the eye.

8. The method of claim 1, wherein the alteration is generated by the wavefront of light traveling through an inconsistency in the pupil of the eye.

9. An apparatus comprising:

a tool configured to remove material from a posterior surface of a scleral lens; and

a controller configured to receive a modification to be made to the posterior surface of the scleral lens and operate the tool to apply the modification to the posterior surface of the scleral lens, wherein the modification removes an alteration to a wavefront of light caused by the wavefront of light traveling through a pupil of an eye.

10. The apparatus of claim 9, wherein the tool being configured to remove the material from the posterior surface of the scleral lens comprises the tool being configured to reduce a thickness of the scleral lens.

11. The apparatus of claim 9, wherein the controller being configured to operate the tool to apply the modification to the posterior surface of the lens comprises the controller being configured to operate the tool to reduce a thickness of the scleral lens.

12. The apparatus of claim 11, wherein the controller comprises a computer system.

13. The apparatus of claim 9, wherein the modification is applied to the posterior surface of an optical section of the scleral lens.

14. The apparatus of claim 9, wherein the tool is a lathe.

15. The apparatus of claim 14, wherein the controller being configured to operate the tool to apply the modification to the posterior surface of the scleral lens comprises the controller being configured to cause the lathe to move to a position, engage the lathe, and disengage the lathe.

16. The apparatus of claim 9, wherein the modification comprises a plurality of computer numerical control codes.

17. A computer program product comprising:

a computer readable storage medium;

program instructions, stored on the computer readable storage medium, for generating a number of dimensions for a scleral lens based on a shape of an eye;

program instructions, stored on the computer readable storage medium, for identifying an alteration to a first wavefront of light caused by the first wavefront of light traveling through a pupil of the eye; and

program instructions, stored on the computer readable storage medium, for generating a modification configured to be made to a posterior surface of the scleral lens based on the alteration, wherein the modification removes the alteration for a second wavefront of light traveling through the scleral lens and the pupil of the eye.

18. The computer program product of claim 17, wherein the program instructions, stored on the computer readable storage medium, for identifying the alteration to the first wavefront of light caused by the first wavefront of light traveling through the pupil of the eye comprise:

program instructions, stored on the computer readable storage medium, for identifying a difference in a plurality of optical paths traveled by the light as the light travels through a plurality of areas of the pupil of the eye to form the alteration to the first wavefront of light.

19. The computer program product of claim 18, wherein the program instructions, stored on the computer readable storage medium, for generating the modification configured to be made to the posterior surface of the second portion of the scleral lens based on the alteration comprise:

program instructions, stored on the computer readable storage medium, for identifying a thickness of a portion of the scleral lens for each of the plurality of areas that equalizes the difference in the number of optical paths.

20. The computer program product of claim 17, wherein the scleral lens comprises an optical section and a scleral section.