FR2340560A1 - Flexible contact lens for correction of long sightedness - has lunula for correction of near vision and two thinned down sections between which long vision correction is provided - Google Patents

Flexible contact lens for correction of long sightedness - has lunula for correction of near vision and two thinned down sections between which long vision correction is provided

Info

Publication number
FR2340560A1
FR2340560A1 FR7603269A FR7603269A FR2340560A1 FR 2340560 A1 FR2340560 A1 FR 2340560A1 FR 7603269 A FR7603269 A FR 7603269A FR 7603269 A FR7603269 A FR 7603269A FR 2340560 A1 FR2340560 A1 FR 2340560A1
Authority
FR
France
Prior art keywords
correction
long
lens
vision
near vision
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
FR7603269A
Other languages
French (fr)
Other versions
FR2340560B1 (en
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.)
Individual
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
Priority to FR7603269A priority Critical patent/FR2340560A1/en
Publication of FR2340560A1 publication Critical patent/FR2340560A1/en
Application granted granted Critical
Publication of FR2340560B1 publication Critical patent/FR2340560B1/fr
Granted 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
    • G02C7/041—Contact lenses for the eyes bifocal; multifocal
    • G02C7/043—Translating type
    • 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
    • G02C7/045—Sectorial configuration
    • 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

Landscapes

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

Abstract

The contact lens for correcting long sightedness comprises elements for two different correction ranges, i.e. a lunule (1) for near vision correction which is situated in the lower part of the lens and over the rest of the surface, (2) and element for long vision. The lower extremity of the lens has a part (3) of low thickness which can be engaged behind the lower eyelid. This part is limited by a shoulder on the external faces which is placed against the edge of the eyelid. The upper part of the lens has a region (5) relieved by thinning down and which makes it easy for the lower eyelid to push the lens upwards for near vision. The height (e) of the thin lower part and the height (h) of the longsight correction lunule are determined as a function of the distances (a, b) separating the centre of the cornea from the edge of the lower eyelid: e = R-a and h = R+100+b-a) where R is the radius of the lens.
FR7603269A 1976-02-06 1976-02-06 Flexible contact lens for correction of long sightedness - has lunula for correction of near vision and two thinned down sections between which long vision correction is provided Granted FR2340560A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR7603269A FR2340560A1 (en) 1976-02-06 1976-02-06 Flexible contact lens for correction of long sightedness - has lunula for correction of near vision and two thinned down sections between which long vision correction is provided

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7603269A FR2340560A1 (en) 1976-02-06 1976-02-06 Flexible contact lens for correction of long sightedness - has lunula for correction of near vision and two thinned down sections between which long vision correction is provided

Publications (2)

Publication Number Publication Date
FR2340560A1 true FR2340560A1 (en) 1977-09-02
FR2340560B1 FR2340560B1 (en) 1980-06-27

Family

ID=9168830

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7603269A Granted FR2340560A1 (en) 1976-02-06 1976-02-06 Flexible contact lens for correction of long sightedness - has lunula for correction of near vision and two thinned down sections between which long vision correction is provided

Country Status (1)

Country Link
FR (1) FR2340560A1 (en)

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3003985A1 (en) * 1980-02-04 1981-08-13 Hecht Contactlinsen GmbH, 7800 Freiburg CONTACTLINSE
EP0062178A1 (en) * 1981-03-23 1982-10-13 BAUSCH & LOMB INCORPORATED Stabilizing carrier for toric contact lenses
US4508436A (en) * 1981-09-28 1985-04-02 Frontier Contact Lenses Of Florida, Inc. Soft toric contact lens
US4573774A (en) * 1981-09-28 1986-03-04 Vistakon, Inc. Soft toric contact lens
US4618228A (en) * 1982-06-11 1986-10-21 Titmus Eurocon Kontaktlinsen Gmbh Bifocal contact lens of the bivisual type
EP0298785A1 (en) * 1987-06-01 1989-01-11 ESSILOR INTERNATIONAL Compagnie Générale d'Optique Aspheric contact lens for correction of presbyopia
EP0624811A1 (en) * 1993-05-12 1994-11-17 HANITA LENSES (a Limited Partnership) Multifocal contact lens
US5483304A (en) * 1991-07-26 1996-01-09 Hanita Lenses Multifocal contact lens
EP1029255A1 (en) * 1997-11-04 2000-08-23 Paul R. Bernstein Soft bifocal contact lenses
JP2013214067A (en) * 2012-03-30 2013-10-17 Johnson & Johnson Vision Care Inc Method and apparatus for providing variations of lower-lid contact surface and under-lid support structures of translating multifocal contact lens
JP2013214068A (en) * 2012-03-30 2013-10-17 Johnson & Johnson Vision Care Inc Method and apparatus for forming translating multifocal contact lens

Cited By (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3003985A1 (en) * 1980-02-04 1981-08-13 Hecht Contactlinsen GmbH, 7800 Freiburg CONTACTLINSE
EP0062178A1 (en) * 1981-03-23 1982-10-13 BAUSCH & LOMB INCORPORATED Stabilizing carrier for toric contact lenses
US4508436A (en) * 1981-09-28 1985-04-02 Frontier Contact Lenses Of Florida, Inc. Soft toric contact lens
US4573774A (en) * 1981-09-28 1986-03-04 Vistakon, Inc. Soft toric contact lens
US4618228A (en) * 1982-06-11 1986-10-21 Titmus Eurocon Kontaktlinsen Gmbh Bifocal contact lens of the bivisual type
US5790231A (en) * 1987-06-01 1998-08-04 Cabinet Bonnet -Thirion Aspherical contact lens for correcting presbyopia
EP0298785A1 (en) * 1987-06-01 1989-01-11 ESSILOR INTERNATIONAL Compagnie Générale d'Optique Aspheric contact lens for correction of presbyopia
US5483304A (en) * 1991-07-26 1996-01-09 Hanita Lenses Multifocal contact lens
EP0624811A1 (en) * 1993-05-12 1994-11-17 HANITA LENSES (a Limited Partnership) Multifocal contact lens
EP1029255A1 (en) * 1997-11-04 2000-08-23 Paul R. Bernstein Soft bifocal contact lenses
EP1029255A4 (en) * 1997-11-04 2000-11-22 Paul R Bernstein Soft bifocal contact lenses
AU748228B2 (en) * 1997-11-04 2002-05-30 Paul R. Bernstein Soft bifocal contact lenses
JP2013214067A (en) * 2012-03-30 2013-10-17 Johnson & Johnson Vision Care Inc Method and apparatus for providing variations of lower-lid contact surface and under-lid support structures of translating multifocal contact lens
JP2013214068A (en) * 2012-03-30 2013-10-17 Johnson & Johnson Vision Care Inc Method and apparatus for forming translating multifocal contact lens

Also Published As

Publication number Publication date
FR2340560B1 (en) 1980-06-27

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