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CARL ZEISS VISION INC.
| CARL ZEISS VISION INC. Patent applications | ||
| Patent application number | Title | Published |
|---|---|---|
| 20110194074 | METHOD AND APPARATUS FOR SUBJECTIVE REFRACTION - An article for performing a subjective refraction includes a lens having a mean power that varies across the lens in a first direction and a cylindrical power that varies across the lens in a second direction, orthogonal to the first direction, wherein the mean power varies by four diopters or more and the cylindrical power varies by four diopters or more. | 08-11-2011 |