Multifocal contact lens
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United States of America Patent
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Feb 22, 2011
Grant Date -
Oct 28, 2010
app pub date -
Apr 23, 2009
filing date -
Apr 23, 2009
priority date (Note) -
In Force
status (Latency Note)
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Abstract
The present invention provides a multifocal contact lens comprising a central contact lens area having a size, a position, and an optical power; an outer contact lens area having a size, a position, and an optical power; wherein the size, the position, and the optical power of the central contact lens area and the outer contact lens area are determined according to a measurement of the size of the pupil under a first light condition, a measurement of the reactivity of the pupil under a varying light condition or a varying focal demand, and a measurement of movement of the pupil under a varying light condition or a varying focal demand.
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