INCREASED STIFFNESS CENTER OPTIC IN SOFT CONTACT LENSES FOR ASTIGMATISM CORRECTION

PURPOSE: A central optical unit having increased stiffness in a soft contact lens for astigmatism correction is provided to orient a toric contact lens on user eyes and to overcome disadvantages related to orientation maintenance. CONSTITUTION: A contact lens (100) includes an optical area (102) and...

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Bibliographic Details
Main Authors HAWKE RYAN, HANSEN JONATHAN
Format Patent
LanguageEnglish
Korean
Published 08.10.2013
Subjects
CONTACT LENSES
OPTICS
PERFORMING OPERATIONS
PHYSICS
PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCESIN A PLASTIC STATE
SPECTACLES
SUNGLASSES OR GOGGLES INSOFAR AS THEY HAVE THE SAME FEATURESAS SPECTACLES
TRANSPORTING
WORKING OF PLASTICS
WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
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Summary:PURPOSE: A central optical unit having increased stiffness in a soft contact lens for astigmatism correction is provided to orient a toric contact lens on user eyes and to overcome disadvantages related to orientation maintenance. CONSTITUTION: A contact lens (100) includes an optical area (102) and a surrounding area (104) surrounding the optical area. The contact lens is formed of a first material having a first elastic coefficient. A second material is integrated in a central optical area of the contact lens and changes the first elastic coefficient to a second elastic coefficient.
Bibliography:Application Number: KR20130029594