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US 5,116,884 AGranted
Melanin hydrophilic contact lenses
AssigneePhotoprotective Technology Incorporated
InventorJames M. Gallas
Life of this patent
Estimating the term…
Abstract
A hydrophilic contact lens is disclosed incorporating melanin that protects the eye from harmful radiation and superoxide.
Claims35
A hydrophilic contact lens, comprising:
- a polymeric material formed by the polymerization of a monomer;
- and
- melanin connected to the polymeric material by a chemical covalent bond.
A hydrophilic contact lens, comprising:
- a polymeric material formed by the polymerization of a monomer;
- a cross-linking agent connected to the polymeric material by a first covalent bond;
- and
- melanin connected to the cross-linking agent by a second covalent bond.
1 more element
A hydrophilic contact lens, comprising:
- a polymeric material formed by the polymerization of a monomer;
- melanin;
- and
- a reagent being chemically attached to the melanin through a covalent bond to make the melanin derivatized melanin so that the melanin is more soluble in the monomer prior to the polymerization of the monomer, the derivatized melanin being connected to the material.
1 more element
A hydrophilic contact lens, comprising:
- a polymeric material formed by the polymerization of a monomer;
- melanin;
- and
- a reagent which physically traps the melanin to make the melanin sequestered melanin so that the melanin is more soluble in the monomer prior to the polymerization of the monomer, the sequestered melanin being connected to the material.
1 more element
A soft contact lens prepared by a process comprising the steps of:
- combining melanin with a hydrophilic polymer;
- and
- forming a covalent bond between the melanin and the hydrophilic polymer.
A soft contact lens prepared by a process comprising the steps of:
- combining melanin with a hydrophilic monomer;
- forming a covalent bond between the melanin and the monomer;
- and
- polymerizing the monomer.
1 more element
A soft contact lens prepared by a process comprising the steps of:
- reacting melanin with a reagent to form derivatized melanin wherein a covalent bond is formed between the reagent and the melanin;
- mixing the derivatized melanin with a hydrophilic monomer;
- and
- polymerizing the hydrophilic monomer.
1 more element
A soft contact lens prepared by a process comprising the steps of:
- mixing melanin with an agent to physically trap the melanin to physically sequester the melanin;
- combining the physically sequestered melanin with a hydrophilic monomer;
- and
- polymerizing the hydrophilic monomer.
1 more element
Dependencies are inferred from the claim text.