CA2169857A1 - Annular Mask Contact Lenses - Google Patents

Annular Mask Contact Lenses

Info

Publication number
CA2169857A1
CA2169857A1 CA2169857A CA2169857A CA2169857A1 CA 2169857 A1 CA2169857 A1 CA 2169857A1 CA 2169857 A CA2169857 A CA 2169857A CA 2169857 A CA2169857 A CA 2169857A CA 2169857 A1 CA2169857 A1 CA 2169857A1
Authority
CA
Canada
Prior art keywords
annular mask
contact lens
pupil
contact lenses
annular
Prior art date
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.)
Granted
Application number
CA2169857A
Other languages
French (fr)
Other versions
CA2169857C (en
Inventor
David Miller
Leroy Meshel
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.)
Novartis AG
Original Assignee
Individual
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.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Publication of CA2169857A1 publication Critical patent/CA2169857A1/en
Application granted granted Critical
Publication of CA2169857C publication Critical patent/CA2169857C/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

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
    • G02C7/048—Means for stabilising the orientation of lenses in the eye
    • 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
    • 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
    • G02C7/046—Contact lenses having an iris pattern

Abstract

An annular mask contact lens (10) designed to operate with the normal functioning of the human pupil. An annular mask (18) forms a small pinhole-like aperture (20) on the contact lens (10) enabling continual focus correction. The outer diameter of the annular mask (18) allows the wearer to transmit more light energy through the pupil as brightness levels decrease. The contact lens (10) may be structured with two separate and distinct optical corrections, both at the small aperture region and in the region beyond the annular mask. Functional imaging is thus achieved for both bright and dim lighting, and over a wide range of viewing distances. Cosmetic and peripheral vision enhancement is also provided by the contact lens constructed according to the invention.
CA002169857A 1993-09-13 1994-09-13 Annular mask contact lenses Expired - Fee Related CA2169857C (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US08/120,970 1993-09-13
US08/120,970 US5786883A (en) 1991-11-12 1993-09-13 Annular mask contact lenses
PCT/US1994/010277 WO1995008135A1 (en) 1993-09-13 1994-09-13 Annular mask contact lenses

Publications (2)

Publication Number Publication Date
CA2169857A1 true CA2169857A1 (en) 1995-03-23
CA2169857C CA2169857C (en) 1999-11-09

Family

ID=22393615

Family Applications (1)

Application Number Title Priority Date Filing Date
CA002169857A Expired - Fee Related CA2169857C (en) 1993-09-13 1994-09-13 Annular mask contact lenses

Country Status (8)

Country Link
US (2) US5786883A (en)
EP (1) EP0724745B1 (en)
JP (1) JP2846475B2 (en)
AT (1) ATE236415T1 (en)
AU (1) AU694743B2 (en)
CA (1) CA2169857C (en)
DE (1) DE69432425D1 (en)
WO (1) WO1995008135A1 (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8308292B2 (en) 2009-10-20 2012-11-13 Universal View Co., Ltd. Soft contact lens
USRE46044E1 (en) 2009-10-20 2016-06-28 Universal View Co., Ltd. Soft contact lens

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CA2169857C (en) 1999-11-09
ATE236415T1 (en) 2003-04-15
JP2846475B2 (en) 1999-01-13
EP0724745B1 (en) 2003-04-02
AU694743B2 (en) 1998-07-30
JPH09502542A (en) 1997-03-11
AU7726394A (en) 1995-04-03
US5757458A (en) 1998-05-26
US5786883A (en) 1998-07-28
WO1995008135A1 (en) 1995-03-23
EP0724745A4 (en) 1996-10-23
DE69432425D1 (en) 2003-05-08
EP0724745A1 (en) 1996-08-07

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