Astigmatic intraocular lens

An intraocular lens for the correction of an astigmatic ametropia comprising a torically refractive lens surface, wherein a total section curve in a principal meridian of the torically refractive lens surface in a plane parallel to a lens axis is described by an asphere according to an equation:

• y=√{square root over (2Rx−(1+asp)x2)}
• or
• x
• =
• y
• 2
• /
• R
• 1
• +
• 1
• -
• (
• 1
• +
• asp
• )
• ⁢
• y
• 2
• /
• R
• 2
• +
• ∑
• j
• ⁢
• c
• j
• ⁢
• y
• j
• wherein
• x is a first coordinate axis being in the direction of the lens axis,
• y is a second coordinate axis being in the direction of a first principal meridian,
• R is a radius or parameter at an apex of the lens,
• asp is an asphericity in the meridian,
• cj are polynomial coefficients,
• wherein R is a value of a radius R1 of a curvature of the torically refractive lens surface in the first principal meridian and of a radius R2 of a curvature of the torically refractive lens surface in a second principal meridian, wherein R1 differs from R2,
• wherein asp is a value of a first asphericity asp1 in the first principal meridian and of a second asphericity asp2 in the second principal meridian of the torically refractive lens surface, wherein asp1 is different from asp2,
• wherein a meridian forming an angle α with the first principle meridian comprises an asphericity aspα which depends on the angle α.