Počet záznamů: 1

Hydrogels contact lenses

  1. 1.
    0348447 - UMCH-V 2011 RIV US eng M - Část monografie knihy
    Michálek, Jiří - Hobzová, Radka - Přádný, Martin - Dušková, Miroslava
    Hydrogels contact lenses.
    Biomedical Applications of Hydrogels Handbook. New York: Springer, 2010 - (Ottenbrite, R.; Park, K.; Okano, T.), s. 303-315. ISBN 978-1-4419-5918-8
    Grant CEP: GA AV ČR KAN200520804
    Výzkumný záměr: CEZ:AV0Z40500505
    Klíčová slova: contact lenses * hydrogels * silicone-hydrogels
    Kód oboru RIV: EI - Biotechnologie a bionika

    Contact lenses can be classified in a number of ways; however, the two main categories are hard and soft lenses, which are based on the material used for their manufacture. The soft lens category can be further divided into hydrophobic and hydrophilic subcategories. Consequently, the development of contact lens materials took three specific directions: hydrogels with high water content, rigid gas-permeable lenses with enhanced oxygen permeability, and surface modification of silicone elastomer lenses. These polymeric systems are expected to improve the water content of the contact lenses as well as the permeability to oxygen, which are crucial properties but controllable through the molecular design. Currently, the high water content hydrogels are being challenged by the silicone-hydrogels for the world market share.
    Trvalý link: http://hdl.handle.net/11104/0188983