CONSTRUCTION OF POSITIVE LENS WITH IMPULSE FEED FOR CONTROL OF MYOPIA, INCREASED FOCUSING DEPTH AND CORRECTION OF PRESBYOPIA Russian patent published in 2018 - IPC A61F9/00 G02C7/04 

FIELD: medicine.

SUBSTANCE: group of inventions relates to medicine. System of the ophthalmic lens contains means for electronic oscillation of the focus of incoming light on the retina. In this case, this focus is modulated at a level that is invisible to the lens wearer, providing acceptable vision at near and long viewing distances. Ophthalmic lens system comprises: the first lens; an optical element with a variable focus located in the lens; a controller for controlling an optical element with a variable focus having a selectable duty cycle; a power supply for an optical element with a variable focus and a controller. Optical element with variable focus is adjustable. Optical element with variable focus is designed to vary the optical power from 0.50 diopters to 20 diopters when the focus changes. Duty cycle provides imperceptible defocusing pulses with a duty cycle in the range of 5 to 90 percent. Another version of the ophthalmic lens system is designed to treat the progression of myopia.

EFFECT: application of this group of inventions will allow to slow the progression of myopia, which does not noticeably weaken visual acuity and contrast sensitivity.

21 cl, 7 dwg, 3 tbl