CONSTRUCTION OF MULTIFOCAL LENS AND METHOD OF PREVENTION AND/OR DECOMMISSION OF PROGRATIZATION OF MYOPIA Russian patent published in 2017 - IPC A61F2/00 

FIELD: physics.

SUBSTANCE: group of inventions concerns contact lenses incorporating multifocal optical power profiles that perform at least one of the actions - slowing, restraining or preventing the progression of myopia. Such a lens comprises a first zone in the center of the lens and at least one peripheral zone surrounding the first region. At least one peripheral zone has a different thickness and optical power than the first region. The first zone and at least one peripheral zone are stepped or jagged.

EFFECT: multifocal optical force profile provides an essentially equivalent foveal vision correction provided by a single focal lens and has such a depth of focus and a reduced sensitivity to CI that slows down, inhibits or prevents the progression of myopia.

26 cl, 3 tbl, 8 dwg