Ophthalmic lens with optimal power profile
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United States of America Patent
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Mar 20, 2007
Issued Date -
N/A
app pub date -
May 31, 2006
filing date -
Aug 20, 2003
priority date (Note) -
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status (Latency Note)
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Abstract
An ophthalmic lens includes an optical zone having a center and a spaced-apart periphery. The optical zone has a first corrective power range in a first region and a second corrective power range in an annular region surrounding the first optical zone. The second corrective power is corrective of spherical aberration of an eye. The optical zone has a power profile that gradually changes from the first corrective power to the second corrective power. A central progressive zone that provides intermediate vision correction may be applied to a central region of the lens. The progressive zone has a diameter that is less than or equal to the diameter of an aperture of a pupil when subjected to bright light.
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