Irradiation of gas permeable contact lenses by far infrared ligh

Details Irradiation of gas permeable contact lenses by far infrared ligh Irradiation of gas permeable contact lenses by far infrared ligh

1998-01-20

1999-11-09

Foelak, Morton

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

Compositions to be polymerized by wave energy wherein said...

522120, 523106, 523107, 523108, C08F 328

Patent

active

059816171

ABSTRACT:
A multi-step process that yields a gas permeable contact lens that is more comfortable to wear due to an increased amount of moisture retention between the cornea and the lens and that also provides an increased amount of oxygen to the cornea to prevent the many potential problems occurring due to insufficient oxygen in the cornea area. The process entails exposure of the concave side of a gas permeable contact lens to far infrared light, thereby creating an electron deficiency on the concave side of the lens (the side which contacts the cornea). This electron deficiency drives a surface reaction upon the lens that produces water and oxygen as products, thereby providing the oxygen and moisture. Subsequent steps in the process are similar, although each subsequent exposure results in greater electron depletion of the concave side of the contact lens, thereby causing the contact lens to be increasingly effective in retaining moisture and oxygen with each additional exposure.

REFERENCES:
patent: 4822864 (1989-04-01), Chen
patent: 5258490 (1993-11-01), Chang
patent: 5583163 (1996-12-01), Muller
patent: 5610252 (1997-03-01), Bambury et al.
patent: 5621018 (1997-04-01), Chabreek

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