Hydrophilic siloxane monomers and dimers for contact lens materials, and contact lenses fabricated therefrom

  • US 4,711,943 A
  • Filed: 04/26/1985
  • Issued: 12/08/1987
  • Est. Priority Date: 04/26/1985
  • Status: Expired due to Term
First Claim
Patent Images

1. A non-fibrous polymeric contact lens material having improved oxygen permeability and stability, said polymeric contact lens material comprising a monomer having the following structural formula:

  • first portion for increasing wettability, said first portion being hydrophilic and including a side-chain functionality selected from the group including the following structural formulae;

    ##STR51## and a second portion for increasing oxygen permeability, said second portion including a siloxane;

    wherein;

    said material has a water content of about 15-60%;

    DK greater than or equal to about 25×

    10-10 ;

    tear strength greater than or equal to about 1.0 g/mm2 ; and

    percent elongation greater than or equal to about 80%.

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