FIELD: medicine.
SUBSTANCE: trifocal artificial ophthalmic lens contains a front optical surface and a rear optical surface and has an optical axis, while the front or rear optical surface contains an optical system having three foci and having at least partially diffraction profile. At the same time, three foci correspond to two foci related to 0 and 1st diffraction orders of the diffraction profile and a focus related to enhanced diffraction side maximums between foci related to 0 and 1st diffraction orders.
EFFECT: use of this group of inventions will provide vision at an intermediate distance and a near distance in addition to distant vision (vision at a far distance).
12 cl, 9 dwg
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| APODIZED HYBRID DIFFRACTIVE-REFRACTIVE IOL FOR PSEUDOACCOMMODATION | 2013 |
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