GB2180243B - Method for the preparation of precast elements for the production of contact lenses by mechanical working - Google Patents

Method for the preparation of precast elements for the production of contact lenses by mechanical working

Info

Publication number
GB2180243B
GB2180243B GB8621276A GB8621276A GB2180243B GB 2180243 B GB2180243 B GB 2180243B GB 8621276 A GB8621276 A GB 8621276A GB 8621276 A GB8621276 A GB 8621276A GB 2180243 B GB2180243 B GB 2180243B
Authority
GB
United Kingdom
Prior art keywords
preparation
production
contact lenses
mechanical working
precast elements
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.)
Expired
Application number
GB8621276A
Other versions
GB2180243A (en
GB8621276D0 (en
Inventor
Otto Wichterle
Jiri Vacik
Jiri Michalek
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.)
Czech Academy of Sciences CAS
Original Assignee
Czech Academy of Sciences CAS
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
Priority claimed from CS856343A external-priority patent/CS254383B1/en
Priority claimed from CS856342A external-priority patent/CS254382B1/en
Application filed by Czech Academy of Sciences CAS filed Critical Czech Academy of Sciences CAS
Publication of GB8621276D0 publication Critical patent/GB8621276D0/en
Publication of GB2180243A publication Critical patent/GB2180243A/en
Application granted granted Critical
Publication of GB2180243B publication Critical patent/GB2180243B/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B1/00—Optical elements characterised by the material of which they are made; Optical coatings for optical elements
    • G02B1/04—Optical elements characterised by the material of which they are made; Optical coatings for optical elements made of organic materials, e.g. plastics
    • G02B1/041—Lenses
    • G02B1/043—Contact lenses
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J7/00—Chemical treatment or coating of shaped articles made of macromolecular substances
    • C08J7/02—Chemical treatment or coating of shaped articles made of macromolecular substances with solvents, e.g. swelling agents

Landscapes

  • Physics & Mathematics (AREA)
  • Chemical & Material Sciences (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Organic Chemistry (AREA)
  • Eyeglasses (AREA)
  • Addition Polymer Or Copolymer, Post-Treatments, Or Chemical Modifications (AREA)
GB8621276A 1985-09-04 1986-09-03 Method for the preparation of precast elements for the production of contact lenses by mechanical working Expired GB2180243B (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CS856343A CS254383B1 (en) 1985-09-04 1985-09-04 Preparation method of the precast units for production of the contact lenses by mechanical machining
CS856342A CS254382B1 (en) 1985-09-04 1985-09-04 Preparation method of the precast unit for machined contact lenses

Publications (3)

Publication Number Publication Date
GB8621276D0 GB8621276D0 (en) 1986-10-08
GB2180243A GB2180243A (en) 1987-03-25
GB2180243B true GB2180243B (en) 1989-08-31

Family

ID=25746342

Family Applications (1)

Application Number Title Priority Date Filing Date
GB8621276A Expired GB2180243B (en) 1985-09-04 1986-09-03 Method for the preparation of precast elements for the production of contact lenses by mechanical working

Country Status (5)

Country Link
CA (1) CA1267512A (en)
DE (1) DE3630186A1 (en)
FR (1) FR2586612B1 (en)
GB (1) GB2180243B (en)
IT (1) IT1197154B (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3823317A1 (en) * 1988-07-09 1990-02-08 Bayer Ag BLANKS FOR CONTACT OPTICAL ITEMS
WO1991004288A1 (en) * 1989-09-14 1991-04-04 Chang Sing Hsiung Non-irritating soft gas permeable contact lens and process for producing same
DE19718293A1 (en) * 1997-04-30 1999-03-18 Consortium Elektrochem Ind Process for the production of three-dimensionally cross-linked polymeric materials with broad cholesteric reflection bands and filters, reflectors and polarizers produced by this process

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1495381B2 (en) * 1963-09-07 1971-06-24 Czeskoslovenska akademie ved , Prag METHOD FOR MANUFACTURING CONTACT LENSES OR CONTACT LENS BLOCKS FROM SWELLABLE HYDROGELS
BE787366A (en) * 1971-08-09 1973-02-09 Dow Chemical Co METHOD OF MODIFYING THE SURFACE CONDITION OF PLASTICS
JPS5940168B2 (en) * 1979-08-20 1984-09-28 ツエントラルニ ナウチノ−イススレドバテルスキ インステイチユト シエルチヤノイ プロミシユレンノステイ halogenated azo dye
EP0100381B1 (en) * 1982-07-30 1986-09-17 Hoya Corporation Soft contact lens
DE3475791D1 (en) * 1983-06-24 1989-02-02 Toray Industries Method of manufacturing shaped article of hydrogel

Also Published As

Publication number Publication date
GB2180243A (en) 1987-03-25
FR2586612A1 (en) 1987-03-06
FR2586612B1 (en) 1989-08-11
IT1197154B (en) 1988-11-30
IT8621584A1 (en) 1988-03-03
DE3630186A1 (en) 1987-03-12
IT8621584A0 (en) 1986-09-03
GB8621276D0 (en) 1986-10-08
CA1267512A (en) 1990-04-10

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Legal Events

Date Code Title Description
PCNP Patent ceased through non-payment of renewal fee