SYSTEM OF LENSES FOR PRESBYOPES WITH DIFFERENT EYE VISION Russian patent published in 2017 - IPC A61F9/00 

FIELD: medicine.

SUBSTANCE: set of lenses for patients with presbyopia with different eyesight contains: a selection guide with lens design and additional optical power options and a group of lenses having a variety of designs, each having its own refractive power. In such a system, for each lens design and selection specified in the guide, the visual inconsistency of is within the range specified by unequations >0.2*add. power + 0.2 and <0.7*add. power + 0.5. The value of additional power is less than or equal to 1. A method for creation of a set of contact lenses for patients with presbyopia with different eye vision contains the following stages: creation of a guide for selection with lenses optical power and required additional power; establishment of an evaluation function, which provides measurement of binocular vision at a great distance, middle distance and near in the entire range of additional power specified in the guide; and application of optimisation to establish lens design and modification of the selection guide that reduce the overall assessment function of the system.

EFFECT: application of this group will improve visual effectiveness.

13 cl, 16 dwg, 6 tbl, 4 ex