Device for preventing from myopia by training near vision by mydriasis and its use

Abstract

The invention relates to a device for preventing from myopia by training special near vision by mydriasis and a using method thereof, which belong to a technic field of a physiatrics used for eyes. The device includes an eyeglass frame, an eyeglass support and a lens, a diopter of the lens Phi=1 / u+A+B-delta phi, wherein a hypometropia degree A is an eye hypermetropia rectification diopter, a mydriasis diopter B has a value between 0.1-3D, delta Phi is a minitrim value and generally is zero, u has a value between 130-1000 mm, the device is provided with a sound, light, electricity, machine controlled or man controlled distance controlling mechanism for the u. The invention is characterised by specially used for myopia prevention training, having a marked effct, rapid curative effect, simple strucure, convenient usage, safety, reliability, having no side effect, being easy to spread, and the method is simple and scientific; being suitable for myopia prevention and rapid treatment of functional myopia for children, especially for students in a long term; being capable of resuming vision of the children to 1.5 in 3 months.

Description

technical field [0001] The invention belongs to the technical field of physical therapy exerciser for eyes. Specifically, it is an ophthalmic and optical device used for training and preventing myopia. Background technique [0002] At present, about one-third of the world's population suffers from myopia, and it is getting worse day by day. There is no ideal and efficient instrument for the prevention and treatment of myopia now. Previous products include "Fengyanyan 2000", which uses red, blue and green visual spectrum light to stimulate the retina to improve vision, but the effect is poor and slow. Chinese patent application No. 89219609 discloses a kind of myopia prevention glasses that are normally worn. The upper part of the lens corrects the distance vision when viewed far away, and the lower part of the lens corrects the near vision when viewed near. Moreover, multi-focus is harmful to the development of adolescent eyeballs. In 1922, Sheard invented the "distant f...

AI Technical Summary

Problems solved by technology

Previous products include "Phoenix Eye 2000", which uses red, blue and green visual spectrum light to stimulate the retina to improve vision, but the effect is poor and slow

Chinese patent application No. 89219609 discloses a kind of myopia prevention glasses that are normally worn. The upper part of the lens corrects the distance vision when viewed far away, and the lower part of the lens corrects the near vision when viewed near. And multi-focals are harmful to the development of adolescent eyeballs

In 1922, Sheard invented the "distant fog vision method" by placing a convex lens in front of his eyes.

From 1980 to 1985, elementary school students in several cities in my country carried out experiments to prevent myopia by wearing 1.5D convex lenses for reading and writing. It must slow down the development of myopia, but it cannot effectively prevent myopia

Other methods of preventing and treating myopia with convex lenses also have the problem that the effect is poor and cannot be popularized.