Prevention and treatment of myopia with bifocal glasses

Abstract: the myopia diopter of the upper part of the binocular lens is high, which is used to see the distance, and the myopia diopter of the lower part of the lens is low, which is used to see the near. Some experts believe that the occurrence, development and regulation of myopia are related.

bifocal glasses, also known as bifocal glasses, are formed by the bonding or fusion of two refractive index glasses, which are divided into tangible and intangible bifocal glasses. There are two kinds of visible dual light films, one of which is adhesive. A small film with different degrees is pasted on the lower part of the large lens. The small film interface is clear, which affects the line of sight and is easy to fall off. The other is a one-line dual lens, which grinds two different diopters on the blank, but there is a horizontal line interface in the middle, which affects the line of sight. Invisible dual lens is to melt the small lens into the large lens. After grinding, there is no obvious boundary between the large and small lenses, and different diopters are generated by the refractive radius, which does not affect the appearance.

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binoculars have high myopia diopter at the upper part of the lens, which is used to see far away, and low myopia diopter at the lower part of the lens, which is used to see near. Some experts believe that the occurrence, development and regulation of myopia are related. When working at close range, the ciliary muscle will contract and adjust, so that the diopter of the lens increases, so you can see the close range target clearly. When you look at a nearby object for a long time, the ciliary muscle contracts continuously and produces continuous regulation Stimulate the structural compensation of the eyeball and make pathological changes in the posterior segment of the eyeball, that is, the posterior pole of the eyeball is lengthened backward, the vitreous cavity is lengthened, and the ocular axis is lengthened. Therefore, when looking at nearby objects, you can see clearly without adjustment, but you can’t see clearly in the distance, that is, myopia. Bifocal glasses can reduce the adjustment when looking close, so as to reduce the structural compensation of the eyeball due to looking close for a long time, and play a role in preventing myopia and preventing the development of myopia. The double light lens also solves the trouble of changing the lens frequently. The far and near vision lenses are made into a pair of glasses, which is greatly convenient to use. There is a “light jump phenomenon” in the double light lens. It will feel uncomfortable when wearing it for the first time, but it will soon get used to it.

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, Abstract: the myopia diopter of the upper part of the binocular lens is high, which is used to see the distance, and the myopia diopter of the lower part of the lens is low, which is used to see the near. Some experts believe that the occurrence, development and regulation of myopia are related., Bifocal glasses, also known as bifocal glasses, are formed by the bonding or fusion of two refractive index glasses, which are divided into tangible and intangible bifocal glasses. There are two kinds of visible dual light films, one of which is adhesive. A small film with different degrees is pasted on the lower part of the large lens. The small film interface is clear, which affects the line of sight and is easy to fall off. The other is a one-line dual lens, which grinds two different diopters on the blank, but there is a horizontal line interface in the middle, which affects the line of sight. Invisible dual lens is a kind of small lens fused into large lens. After grinding, there is no obvious boundary between large and small lenses, and different diopters are generated by refractive radius, which does not affect the appearance.,

bifocal glasses, also known as bifocal glasses, are formed by the bonding or fusion of two refractive index glasses, which are divided into tangible and intangible bifocal glasses. There are two kinds of visible dual light films, one of which is adhesive. A small film with different degrees is pasted on the lower part of the large lens. The small film interface is clear, which affects the line of sight and is easy to fall off. The other is a one-line dual lens, which grinds two different diopters on the blank, but there is a horizontal line interface in the middle, which affects the line of sight. Invisible dual lens is to melt the small lens into the large lens. After grinding, there is no obvious boundary between the large and small lenses, and different diopters are generated by the refractive radius, which does not affect the appearance.

,

and

binoculars have high myopia diopter at the upper part of the lens, which is used to see far away, and low myopia diopter at the lower part of the lens, which is used to see near. Some experts believe that the occurrence, development and regulation of myopia are related. When working at close range, the ciliary muscle will contract and adjust, so that the diopter of the lens increases, so you can see the close range target clearly. When you look at a nearby object for a long time, the ciliary muscle contracts continuously and produces continuous regulation Stimulate the structural compensation of the eyeball and make pathological changes in the posterior segment of the eyeball, that is, the posterior pole of the eyeball is lengthened backward, the vitreous cavity is lengthened, and the ocular axis is lengthened. Therefore, when looking at nearby objects, you can see clearly without adjustment, but you can’t see clearly in the distance, that is, myopia. Bifocal glasses can reduce the adjustment when looking close, so as to reduce the structural compensation of the eyeball due to looking close for a long time, and play a role in preventing myopia and preventing the development of myopia. The double light lens also solves the trouble of changing the lens frequently. The far and near vision lenses are made into a pair of glasses, which is greatly convenient to use. There is a “light jump phenomenon” in the double light lens. It will feel uncomfortable when wearing it for the first time, but it will soon get used to it.

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