Patent ID: 6929367
Filing Date: 2005-08-16
Classification: B29D,G02C

Abstract:
1. A hydrophilic colored contact lens comprising: a non-opaque pupil section, a generally annular iris section surrounding the pupil section, and a non-opaque peripheral section surrounding the iris section; the iris section having a colored, printed, opaque, intermittent pattern of elements covering at least about 25% of the area of the iris section, the pattern leaving a portion of the iris section non-opaque within interstices of the pattern, the non-opaque portion of the iris section including generally radially elongated areas, the intermittent pattern extending across the entire area of the iris section; the iris section having an outer perimeter and an inner perimeter, and including pattern elements of a first shade, pattern elements of a second shade located generally at or near the inner perimeter of the iris section, and a jagged border zone generally along an interface of the pattern elements or the first and second shades; the iris section also including pattern elements of a third shade; wherein the third shade is located at least at the outer perimeter of the iris section; wherein the pattern is printed on the lens with ink having a binding polymer; wherein the binding polymer includes functional groups selected from —COOH, —OH, and —NH wherein some of the pattern elements of the first shade are mixed with the pattern elements of the second shade, and a noticeable change of shade occurs across the jagged border zone; wherein the minimum distance of the jagged border zone from the outer perimeter is from about 5% to about 45% of the radial width of the iris section, and the maximum distance of the jagged border zone from the outer perimeter is from about 45% to about 95% of the radial width of the iris section; wherein the elements of the pattern, are indiscernible to the ordinary viewer; and wherein the lens is capable of changing the apparent color of the iris of a person wearing the lens and imparting a very natural appearance.