GB1168173A - Improvements in or relating to Visual Aids - Google Patents

Improvements in or relating to Visual Aids

Info

Publication number
GB1168173A
GB1168173A GB55812/67A GB5581267A GB1168173A GB 1168173 A GB1168173 A GB 1168173A GB 55812/67 A GB55812/67 A GB 55812/67A GB 5581267 A GB5581267 A GB 5581267A GB 1168173 A GB1168173 A GB 1168173A
Authority
GB
United Kingdom
Prior art keywords
gel
sohnges
shaped
lens
dec
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
GB55812/67A
Inventor
Wilhelm P Sohnges
Heinrich Thiele
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.)
SOEHNGES OPTIK
WILHELM PETER SOHNGES
Original Assignee
SOEHNGES OPTIK
WILHELM PETER SOHNGES
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 SOEHNGES OPTIK, WILHELM PETER SOHNGES filed Critical SOEHNGES OPTIK
Publication of GB1168173A publication Critical patent/GB1168173A/en
Expired 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
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
    • A61K35/00—Medicinal preparations containing materials or reaction products thereof with undetermined constitution
    • A61K35/12—Materials from mammals; Compositions comprising non-specified tissues or cells; Compositions comprising non-embryonic stem cells; Genetically modified cells
    • A61K35/44—Vessels; Vascular smooth muscle cells; Endothelial cells; Endothelial progenitor cells
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L89/00—Compositions of proteins; Compositions of derivatives thereof
    • 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

Landscapes

  • Health & Medical Sciences (AREA)
  • Physics & Mathematics (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • General Health & Medical Sciences (AREA)
  • Ophthalmology & Optometry (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Cell Biology (AREA)
  • Medicinal Chemistry (AREA)
  • Virology (AREA)
  • Epidemiology (AREA)
  • Developmental Biology & Embryology (AREA)
  • Immunology (AREA)
  • Biomedical Technology (AREA)
  • Zoology (AREA)
  • Engineering & Computer Science (AREA)
  • Vascular Medicine (AREA)
  • Pharmacology & Pharmacy (AREA)
  • Biotechnology (AREA)
  • Animal Behavior & Ethology (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Polymers & Plastics (AREA)
  • Organic Chemistry (AREA)
  • Eyeglasses (AREA)
  • Treatment And Processing Of Natural Fur Or Leather (AREA)
  • Peptides Or Proteins (AREA)

Abstract

1,168,173. Lenses. W.P. SOHNGES [trading as SOHNGES OPTIK WILHELM P. SOHNGES]. Dec. 7, 1967 [Dec.13, 1966], No. 55812/67. Heading G2J. A lens comprises a shaped gel, irreversibly hardened so that it is not swellable or soluble in liquids found in the region of the eye, formed from the protein aceous material of the lens of an eye of a warm-blooded animal e.g. cows, sheep and pigs. The gel is formed by (i) dehydrating the protein aceous material or (ii) dissolving the proteinaceous material in an aqueous solution of a salt, acid, alkali or urea and treating with halogen or metal ions or subjecting the sol to an electric field. The gel is shaped by swarfing, pressing or moulding in a shaped permeable membrane. The lens is stabilized by treatment with a tanning agent e.g. formaldehyde or hexamethylene tetramine, which in the case of the latter may be added during gel formation.
GB55812/67A 1966-12-13 1967-12-07 Improvements in or relating to Visual Aids Expired GB1168173A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DES0107397 1966-12-13

Publications (1)

Publication Number Publication Date
GB1168173A true GB1168173A (en) 1969-10-22

Family

ID=7528077

Family Applications (1)

Application Number Title Priority Date Filing Date
GB55812/67A Expired GB1168173A (en) 1966-12-13 1967-12-07 Improvements in or relating to Visual Aids

Country Status (7)

Country Link
AT (1) AT289418B (en)
BE (1) BE706305A (en)
CH (1) CH493859A (en)
DE (1) DE1617804A1 (en)
GB (1) GB1168173A (en)
LU (1) LU54685A1 (en)
NL (1) NL6714485A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4879072A (en) * 1987-07-07 1989-11-07 Essilor International Cie Generale D'optique Method of manufacturing natural protein polymer contact lenses by molding and cross-linking

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2963348D1 (en) * 1978-10-18 1982-09-02 Essilor Int Hydrogels from natural protein polymers, their production and soft contact lenses made from them

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4879072A (en) * 1987-07-07 1989-11-07 Essilor International Cie Generale D'optique Method of manufacturing natural protein polymer contact lenses by molding and cross-linking

Also Published As

Publication number Publication date
AT289418B (en) 1971-04-26
LU54685A1 (en) 1967-12-18
DE1617804A1 (en) 1972-01-05
NL6714485A (en) 1968-06-14
CH493859A (en) 1970-07-15
BE706305A (en) 1968-03-18

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Legal Events

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