Multifocal contact lenses manufactured from a responsive polymer gel

1. A multi-focal contact lens wherein the lens is manufactured at least partially from a responsive polymer gel capable of changes in shape when worn by a wearer of the contact lens, wherein the responsive polymer gel responds to the application of stimulus corresponding to a detected condition in at least one eye of the wearer.

2. A multi-focal contact lens according to claim 1 wherein the responsive polymer gel changes shape and/or refractive index.

3. A multi-focal contact lens according to claim 1 wherein the stimulus is an electric field.

4. A multi-focal contact lens according to claim 1 wherein the stimulus is a magnetic field.

5. A multi-focal contact lens according to claim 1 wherein the stimulus is produced by means embedded in the contact lens itself.

6. A multi-focal contact lens according to claim 5 wherein the means of providing the stimulus is a nano or micro chip.

7. A multi-focal contact lens wherein:

the lens is manufactured at least partially from a responsive polymer gel that responds to application of stimulus produced by a nano or micro chip embedded in the contact lens itself; and

the chip monitors eye movement such that a change in eye movement causes the chip to emit the stimulus.

8. A multi-focal contact lens wherein:

the lens is manufactured at least partially from a responsive polymer gel that responds to application of stimulus produced by a nano or micro chip embedded in the contact lens itself; and

the chip monitors inter-pupillary distance and emits the stimulus when inter-pupillary distance changes.

9. A multi-focal contact lens wherein:

the lens is manufactured at least partially from a responsive polymer gel that responds to application of stimulus produced by a nano or micro chip embedded in the contact lens itself; and

the chip monitors a distance between right and left contact lenses and emits the stimulus when the distance changes.

10. A multi-focal contact lens wherein the lens is manufactured at least partially from a responsive polymer gel, said lens capable of changes in shape with stimulus during use by a wearer of the lens, wherein said at least one stimulus is responsive to eye movement of the wearer of the lens, and wherein said at least one stimulus is selected from the group consisting of temperature, pH, ionic strength, light, electric field, magnetic field, shear forces, and a chemical trigger.

11. A multi-focal contact lens wherein the lens is manufactured at least partially from a responsive polymer gel capable of changing shape when worn by a wearer of the lens, said changing shape triggered by eye movement of the wearer of the lens.