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METHOD OF FORMING

  • US 20100013114A1
  • Filed: 03/12/2007
  • Published: 01/21/2010
  • Est. Priority Date: 03/10/2006
  • Status: Abandoned Application
First Claim
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1. A method of forming a contact lens having a polymeric structure, wherein said contact lens has at least one curved surface, comprising the steps:

  • providing a fluid solution comprising a non-macrogelled polymer and a dispersion agent;

    applying the fluid solution to at least one receiving surface of a mould, the receiving surface(s) of the mould being shaped to receive said fluid solution; and

    allowing the formation of the device, by gelation, by at least one step selected from;

    i) removing at least part of the dispersion agent from the fluid solution,ii) modulating the temperature of the fluid solution,iii) modulating at least one of the shear and vibrational state of the fluid solution,iv) modulating the pH of the fluid solution, andv) adding a non-solvent for the non-macrogelled polymer which is a swelling agent for the non-macrogelled polymer.

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