CA986343A - Contact lens for correction of ametropia associated with presbyopia - Google Patents

Contact lens for correction of ametropia associated with presbyopia

Info

Publication number: CA986343A
Authority: CA; Canada
Prior art keywords: ametropia; presbyopia; correction; contact lens; lens
Prior art date: 1973-12-21
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.): Expired

Inventor

Carl H. Evans

Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)

CARMA OPTICAL Inc

Original Assignee

CARMA OPTICAL Inc

Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)

1973-12-21

Filing date

1973-12-21

Publication date

1976-03-30

1973-12-21Application filed by CARMA OPTICAL IncfiledCriticalCARMA OPTICAL Inc

1973-12-21Priority to CA188,829ApriorityCriticalpatent/CA986343A/en

1976-03-30Application grantedgrantedCritical

1976-03-30Publication of CA986343ApublicationCriticalpatent/CA986343A/en

StatusExpiredlegal-statusCriticalCurrent

Classifications

- G—PHYSICS
- G02—OPTICS
- G02C—SPECTACLES; SUNGLASSES OR GOGGLES INSOFAR AS THEY HAVE THE SAME FEATURES AS SPECTACLES; CONTACT LENSES
- G02C7/00—Optical parts
- G02C7/02—Lenses; Lens systems ; Methods of designing lenses
- G02C7/04—Contact lenses for the eyes
- G02C7/041—Contact lenses for the eyes bifocal; multifocal
- G02C7/044—Annular configuration, e.g. pupil tuned
- G—PHYSICS
- G02—OPTICS
- G02C—SPECTACLES; SUNGLASSES OR GOGGLES INSOFAR AS THEY HAVE THE SAME FEATURES AS SPECTACLES; CONTACT LENSES
- G02C7/00—Optical parts
- G02C7/02—Lenses; Lens systems ; Methods of designing lenses
- G02C7/04—Contact lenses for the eyes
- G02C7/041—Contact lenses for the eyes bifocal; multifocal
- G02C7/042—Simultaneous type

Landscapes

Health & Medical Sciences (AREA)
Ophthalmology & Optometry (AREA)
Physics & Mathematics (AREA)
General Health & Medical Sciences (AREA)
General Physics & Mathematics (AREA)
Optics & Photonics (AREA)

CA188,829A1973-12-211973-12-21Contact lens for correction of ametropia associated with presbyopiaExpiredCA986343A (en)

Priority Applications (1)

Application Number	Priority Date	Filing Date	Title
CA188,829ACA986343A (en)	1973-12-21	1973-12-21	Contact lens for correction of ametropia associated with presbyopia

Applications Claiming Priority (1)

Application Number	Priority Date	Filing Date	Title
CA188,829ACA986343A (en)	1973-12-21	1973-12-21	Contact lens for correction of ametropia associated with presbyopia

Publications (1)

Publication Number	Publication Date
CA986343Atrue CA986343A (en)	1976-03-30

Family

ID=4098764

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
CA188,829AExpiredCA986343A (en)	1973-12-21	1973-12-21	Contact lens for correction of ametropia associated with presbyopia

Country Status (1)

Country	Link
CA (1)	CA986343A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
US4102567A (en)*	1976-09-13	1978-07-25	American Optical Corporation	Material for fabrication of artificial intraocular lenses and hard contact lenses
US4180308A (en)*	1972-10-02	1979-12-25	Syntex (Usa) Inc.	Contact lens
US4401372A (en)	1972-10-02	1983-08-30	Syntex (U.S.A.) Inc.	Contact lens
FR2615965A1 (en)*	1987-06-01	1988-12-02	Essilor Int	ASPHERIC CONTACT LENS FOR CORRECTION OF PRESBYOPIA

1973
- 1973-12-21CACA188,829Apatent/CA986343A/ennot_activeExpired

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
US4180308A (en)*	1972-10-02	1979-12-25	Syntex (Usa) Inc.	Contact lens
US4401372A (en)	1972-10-02	1983-08-30	Syntex (U.S.A.) Inc.	Contact lens
US4102567A (en)*	1976-09-13	1978-07-25	American Optical Corporation	Material for fabrication of artificial intraocular lenses and hard contact lenses
FR2615965A1 (en)*	1987-06-01	1988-12-02	Essilor Int	ASPHERIC CONTACT LENS FOR CORRECTION OF PRESBYOPIA
EP0298785A1 (en)*	1987-06-01	1989-01-11	ESSILOR INTERNATIONAL Compagnie Générale d'Optique	Aspheric contact lens for correction of presbyopia
US5790231A (en)*	1987-06-01	1998-08-04	Cabinet Bonnet -Thirion	Aspherical contact lens for correcting presbyopia

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