Claims
- 1. A method for fitting an ophthalmic lens comprising the steps of placing a lens at least one surface of which comprises a surface pattern on a cornea; and determining an amount of print-through of the surface pattern.
- 2. The method of claim 1, wherein the at least one surface is the concave surface.
- 3. The method of claim 1, wherein the lens is a contact lens.
- 4. The method of claim 1, wherein the surface pattern is zones of alternating refractive power, cylinder power, spheres, aberrated spheres, aspheres, surfaces calculated from topographic measurements or topographically-derived surfaces, surfaces calculated from wave front measurements, or combinations thereof.
- 5. The method of claim 1, further comprising modifying the surface pattern in accordance with the print-through determined.
- 6. The method of claim 1, wherein the determining step comprises using a corneal topographer.
- 7. The method of claim 1, wherein the determining step comprises determining a change in lens topography on the convex surface of the lens as a result of a change in topography on the concave surface of the lens.
- 8. The method of claim 1, further comprising determining whether the print-through is greater than a first predetermined amount.
- 9. The method of claim 1, further comprising the step of determining whether the print-through is less than a second predetermined amount.
- 10. The method of claim 8, wherein provided that the print-through is greater than the first predetermined amount, the modifying step comprises adjusting the lens' distance power, near power, add power, cylinder power, or combinations thereof.
- 11. The method of claim 10, wherein the modifying step comprises adjusting the add power.
- 12. The method of claim 10, wherein the modifying step comprises adjusting the cylinder power.
- 13. The method of claim 9, wherein is the print-through is less than the second predetermined amount, the modifying step comprises biasing the lens for distance vision.
Parent Case Info
This is a Continuation-in-Part (CIP) of prior application Ser. No. 09/286,094, filed Apr. 2, 1999.
US Referenced Citations (5)
Number |
Name |
Date |
Kind |
5448312 |
Roffman et al. |
Sep 1995 |
|
5485228 |
Roffman et al. |
Jan 1996 |
|
5682223 |
Menezes et al. |
Oct 1997 |
|
5715031 |
Roffman et al. |
Feb 1998 |
|
5847802 |
Menezes et al. |
Dec 1998 |
|
Non-Patent Literature Citations (1)
Entry |
“Using Corneal Topography” Contact Lens Spectrum, Mar. 13-15, 1999. |
Continuation in Parts (1)
|
Number |
Date |
Country |
Parent |
09/286094 |
Apr 1999 |
US |
Child |
09/369525 |
|
US |