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Sam Sanjana
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FAQ in Contact Lens Over Eyeglasses

Published on 6/15/2019
For additional information  Click Here

No line bifocal glasses are upgraded from ordinary Lutenol Review bifocals, mainly because many wearers are tormented by the vision lines in the lenses. Bifocals are combined by two different lenses, each of them are responsible for nearby vision and distant vision respectively. However, the transition between the two lenses is too radical and wearers will always suffer a lot when they change their visions. Or in some cases, wearers have to suffer from headache and dizziness. Therefore, the transition between the two vision areas should be natural and smooth, so as to ensure wearers have more vision comfort. And the emergence of no line bifocals has really benefited these sufferers. No such radical vision transition can be found between the two, for the transition areas are designed in varifocal.

They are also upgraded from ordinary trifocal glasses. Similar to no line bifocals, these no line eye wear can ensure wearers have natural vision transition. And the only difference is- they have more lenses than no line bifocal glasses. Progressive eyeglasses are some of the most popular viarifocal eye wear. They are composed of various focal, at least 20 focal and can make all vision transition in a progressive way- this is why they are called progressive. These eye wear are so perfect in vision transition that many wearers always think no eyeglasses are on their faces.

In addition, almost all these varifoal eyeglasses are used be designed in larger sizes. But now, they can also be designed in ordinary sizes, due to the employment of special materials. Eye glasses in the market can mainly be categorized into several groups, namely, rimless, semi-rimless and full rim glasses. Of the three groups, the last two are relatively new and the last one is the most traditional. Full rim glasses are also called wire frame glasses or wire rim glasses with the same history as the first eyewear in the industry. Eyeglasses in wire frames are the commonest but most important products in the industry, especially as more and more achievements are scored in the related designs.

As time goes by, the materials employed to make glasses in wire frames are also upgraded on and on. For example, some of the earliest glasses are made from glass, ribbon, steel, and so on- many problems and defects can be found on these materials and glasses made from them can not completely meet wearers' needs. And nowadays wire rime glasses are completely made from innovated or upgraded materials, like top glass, polycarbonate, plastic, memory plastic, titanium and so on. Glasses made from these new materials can overcome many defects and problems from material and can be used for different needs, likes shatter-resistant, impact-proofed, and so on.


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