FIELD: physics.
SUBSTANCE: method of designing an ophthalmic lens according to the invention involves acquiring original wavefront aberration data for an eye of an individual having a first diameter; extrapolating the aberration data to second diameter and applying a mathematical filter to each meridian of the extrapolated aberration data to reduce excessive variations in thickness of a lens surface. The second diameter substantially corresponds to or is greater than the diameter of an optical zone of a contact lens, and the filter is selected from a group consisting of a Hamming window, a Hanning window, a Parzen window, a Blackman window, and a Welch window.
EFFECT: designing contact lenses which can be used to correct low and high order ocular wavefront aberrations and in which excessive variation of lens thickness is minimised.
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