Contrast-enhancing aspheric intraocular lens
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United States of America Patent
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Issued Date -
Jun 1, 2006
app pub date -
Dec 1, 2004
filing date -
Dec 1, 2004
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Abandoned
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Abstract
The present invention provides an intraocular lens (IOL) having an optic with a posterior and an anterior refractive surfaces, at least one of which has an aspherical profile, typically characterized by a non-zero conic constant, for controlling the aberrations of a patient's eye in which the IOL is implanted. Preferably, the IOL's asphericity, together with the aberrations of the patient's eye, cooperate to provide an image contrast characterized by a calculated modulation transfer function (MTF) of at least about 0.25 and a depth of field of at least about 0.75 Diopters.
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