JPS6458253A - Intraocular lens - Google Patents

Intraocular lens

Info

Publication number
JPS6458253A
JPS6458253A JP21713787A JP21713787A JPS6458253A JP S6458253 A JPS6458253 A JP S6458253A JP 21713787 A JP21713787 A JP 21713787A JP 21713787 A JP21713787 A JP 21713787A JP S6458253 A JPS6458253 A JP S6458253A
Authority
JP
Japan
Prior art keywords
optical
heat
contractible
extensible
changing
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.)
Pending
Application number
JP21713787A
Other languages
Japanese (ja)
Inventor
Isao Matsumura
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.)
Canon Inc
Original Assignee
Canon Inc
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 Canon Inc filed Critical Canon Inc
Priority to JP21713787A priority Critical patent/JPS6458253A/en
Publication of JPS6458253A publication Critical patent/JPS6458253A/en
Pending legal-status Critical Current

Links

Classifications

    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
    • A61F2/02—Prostheses implantable into the body
    • A61F2/14—Eye parts, e.g. lenses or corneal implants; Artificial eyes
    • A61F2/16—Intraocular lenses
    • A61F2/1613—Intraocular lenses having special lens configurations, e.g. multipart lenses; having particular optical properties, e.g. pseudo-accommodative lenses, lenses having aberration corrections, diffractive lenses, lenses for variably absorbing electromagnetic radiation, lenses having variable focus

Landscapes

  • Health & Medical Sciences (AREA)
  • Ophthalmology & Optometry (AREA)
  • Cardiology (AREA)
  • Oral & Maxillofacial Surgery (AREA)
  • Transplantation (AREA)
  • Engineering & Computer Science (AREA)
  • Biomedical Technology (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Vascular Medicine (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Prostheses (AREA)

Abstract

PURPOSE:To obtain an intraocular lens capable of changing lens refractive power by changing the surface shape of an optical part by substantially changing a band length, by providing a clamp member to the outer peripheral part of the optical part and arranging a member extensible and contractible by heating to at least a part of the clamp member. CONSTITUTION:Two support loops 2 extending to the periphery are provided to an optical part 1 formed of an elastic optical material and a clamp band 3 is provided to the outer peripheral part of the optical part 1 and a part 4 extensible and contractible by heat is provided to a part of the clamp band 3. A spring member 5 is sealed in the heat extensible and contractible part 4 and, when this part 4 is heated by laser beam, said part extends and contracts by the repulsion of the spring member 5. This heat-deformable part 4 is pref. formed from a material having good heat absorbability from the aspect of efficiency. By this method, the radius of curvature of a lens surface can be changed and the error of the refractive power of an intraocular lens or a refraction error including cornea astigmatism finely changed by operation can be corrected.
JP21713787A 1987-08-31 1987-08-31 Intraocular lens Pending JPS6458253A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP21713787A JPS6458253A (en) 1987-08-31 1987-08-31 Intraocular lens

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP21713787A JPS6458253A (en) 1987-08-31 1987-08-31 Intraocular lens

Publications (1)

Publication Number Publication Date
JPS6458253A true JPS6458253A (en) 1989-03-06

Family

ID=16699433

Family Applications (1)

Application Number Title Priority Date Filing Date
JP21713787A Pending JPS6458253A (en) 1987-08-31 1987-08-31 Intraocular lens

Country Status (1)

Country Link
JP (1) JPS6458253A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH02189146A (en) * 1988-10-21 1990-07-25 Genjiro Omi Contact lens
JPH0441619A (en) * 1990-06-07 1992-02-12 Nippon Steel Corp Production of resistance welded tube excellent in toughness at low temperature

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH02189146A (en) * 1988-10-21 1990-07-25 Genjiro Omi Contact lens
JPH0441619A (en) * 1990-06-07 1992-02-12 Nippon Steel Corp Production of resistance welded tube excellent in toughness at low temperature

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