Junctionless ophthalmic lenses and methods for making same
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United States of America Patent
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Dec 26, 2006
Issued Date -
N/A
app pub date -
Jul 21, 2003
filing date -
Nov 10, 2000
priority date (Note) -
Expired
status (Latency Note)
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Abstract
Methods for producing a junctionless ophthalmic lens are provided. Additionally, ophthalmic lenses having junctionless, three dimensional surfaces, for example, asymmetrical anterior and/or posterior surfaces, as well as molding tools used in the production of such lenses, are also provided. The method generally include providing sample data points to define a surface contour, and interpolating between these data points using an algorithm to produce a simulated three dimensional surface. The simulated three dimensional surface is used in producing an ophthalmic lens, for example, in cast molding a contact lens.
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