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 providedInfo
- 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
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.
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)
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 |
-
1976
- 1976-02-06 FR FR7603269A patent/FR2340560A1/en active Granted
Cited By (14)
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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Legal Events
Date | Code | Title | Description |
---|---|---|---|
ST | Notification of lapse |