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OPHTHALMIC APPARATUS WITH CORRECTIVE MERIDIANS HAVING EXTENDED TOLERANCE BAND WITH FREEFORM REFRACTIVE SURFACES
OPHTHALMIC APPARATUS WITH CORRECTIVE MERIDIANS HAVING EXTENDED TOLERANCE BAND WITH FREEFORM REFRACTIVE SURFACES
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机译:具有矫正经络的眼科仪器,具有宽容带,具有自由形式的折射面
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摘要
The embodiments disclosed herein include improved toric lenses and other ophthalmic apparatuses (including, for example, contact lens, intraocular lenses (IOLs), and the like) that includes a freeform-polynomial surface area that establishes a band of operational meridian for the apparatus to an intended correction meridian. The freeform-polynomial surface area is defined by a mathematical expression comprising a combination of one or more polynomial expressions (e.g., Chebyshev-based polynomial expression, Zernike-based polynomial expression, etc.) each having a distinct complex orders.
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