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US 2007/0168027 A1Published application
Accommodating diffractive intraocular lens
OwnerDaniel Brady, Patricia Piersinventors
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OwnerDaniel Brady, Patricia Piersinventors
Estimating the term…
A series of deformable, accommodating intraocular lenses is disclosed, where the series subtends a range of nominal powers. The capsular bag of the eye exerts a distorting force on the lens, thereby changing its power and allowing for accommodation. A full accommodation range is the lens power that brings a distant object into focus, subtracted from the lens power that brings a near object into focus. Each lens in the series has essentially the same shape, which is optimized to maximize the accommodation range for a given distorting force. Typically, the lenses in the series have a meniscus shape, although plano-convex and bi-convex may also be used. In order to vary the nominal power for each lens in the series, without significantly affecting the accommodation range, a diffraction grating is applied to one or both of the lens surfaces, where the grating power is different for each lens in the series.
A method of providing a range of nominal powers for a plurality of intraocular lenses, the method comprising:
The method of claim 9, wherein each diffractive element has a surface profile height generally equal to the design wavelength.
A method of increasing a power of a deformable intraocular lens, comprising:
A plurality of deformable, accommodating intraocular lenses, each lens comprising:
A plurality of deformable, accommodating intraocular lenses, each lens comprising:
An apparatus for providing a range of nominal powers for a plurality of intraocular lenses, the apparatus comprising:
Dependencies are inferred from the claim text.