GB1394056A - Contact lenses - Google Patents

Contact lenses

Info

Publication number
GB1394056A
GB1394056A GB3423171A GB3423171A GB1394056A GB 1394056 A GB1394056 A GB 1394056A GB 3423171 A GB3423171 A GB 3423171A GB 3423171 A GB3423171 A GB 3423171A GB 1394056 A GB1394056 A GB 1394056A
Authority
GB
United Kingdom
Prior art keywords
contact lenses
july
plastics material
hydrophilic
temperature
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
GB3423171A
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.)
National Research Development Corp UK
Original Assignee
National Research Development Corp UK
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 National Research Development Corp UK filed Critical National Research Development Corp UK
Priority to GB3423171A priority Critical patent/GB1394056A/en
Publication of GB1394056A publication Critical patent/GB1394056A/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
    • 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

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

Abstract

1394056 Contact lenses NATIONAL RESEARCH DEVELOPMENT CORP 18 July 1972 [21 July 1971] 34231/71 Heading G2J [Also in Division C3] Contact lenses comprise a physiologically inert, transparent, oxygen permeable plastics material having a hydrophilic surface and a glass transition temperature between ambient temperature and normal eye temperature. The plastics material may be poly 4-methyl-pentene-1 or a copolymer of 4-methylpentene-1 with 2-methylbutene-1, and may be rendered hydrophilic by coating with silica or titanium dioxide or by compounding with an alkyl titanate, by treating with a strong oxidizing agent, e.g. chromic acid solution, or a sulphanating agent and base, or by copolymerizing with an olefinically unsaturated hydrophilic monomer, e.g. alkenols, glycol acrylates and methacrylates and N-vinyl pyrrolidone. The physical properties of the polymer may be varied by incorporating other monomers, e.g. acenaphthylene.
GB3423171A 1971-07-21 1971-07-21 Contact lenses Expired GB1394056A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB3423171A GB1394056A (en) 1971-07-21 1971-07-21 Contact lenses

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB3423171A GB1394056A (en) 1971-07-21 1971-07-21 Contact lenses

Publications (1)

Publication Number Publication Date
GB1394056A true GB1394056A (en) 1975-05-14

Family

ID=10363060

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3423171A Expired GB1394056A (en) 1971-07-21 1971-07-21 Contact lenses

Country Status (1)

Country Link
GB (1) GB1394056A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0184729A2 (en) * 1984-12-11 1986-06-18 Bayer Ag Soft contact lenses
EP0184727A2 (en) * 1984-12-11 1986-06-18 Bayer Ag Soft contact lenses with poor hydrophilic properties
EP2927275A4 (en) * 2012-11-30 2016-07-20 Mitsui Chemicals Inc Composition for optical materials and use thereof

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0184729A2 (en) * 1984-12-11 1986-06-18 Bayer Ag Soft contact lenses
EP0184727A2 (en) * 1984-12-11 1986-06-18 Bayer Ag Soft contact lenses with poor hydrophilic properties
EP0184727A3 (en) * 1984-12-11 1987-09-23 Bayer Ag Soft contact lenses with poor hydrophilic properties
EP0184729A3 (en) * 1984-12-11 1987-09-30 Bayer Ag Soft contact lenses
EP2927275A4 (en) * 2012-11-30 2016-07-20 Mitsui Chemicals Inc Composition for optical materials and use thereof
US9529118B2 (en) 2012-11-30 2016-12-27 Mitsui Chemicals, Inc. Composition for optical material and use of same

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Legal Events

Date Code Title Description
PS Patent sealed
PLNP Patent lapsed through nonpayment of renewal fees