Method for identifying characteristics of contact lenses

Optics: eye examining – vision testing and correcting – Spectacles and eyeglasses – Ophthalmic lenses or blanks

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351160H, 351177, G02C 704, G02C 702

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active

060798262

ABSTRACT:
Contact lenses include a posterior surface including a first identifiable marking, and an anterior surface includes a second identifiable marking different from the first marking, the first and second markings in combination designating the optical correction of the lenses. The lenses are useful in methods where the markings are used to identify characteristics of the lens.

REFERENCES:
patent: 4193671 (1980-03-01), Erickson et al.
patent: 4194814 (1980-03-01), Fischer et al.
patent: 4256369 (1981-03-01), Wicherle
patent: 4268133 (1981-05-01), Fischer et al.
patent: 4525044 (1985-06-01), Bauman
patent: 4976533 (1990-12-01), Hahn et al.
patent: 5085013 (1992-02-01), Ascosi et al.
patent: 5323192 (1994-06-01), Howland et al.
patent: 5727987 (1998-03-01), Gottschlad
Patent Abstracts of Japan, vol. 096, No. 11, Nov. 29, 1996 & JP 08194193 (Hoya Corp.), Jul. 30, 1996.

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