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1.base material quality. The substrate quality determines the durability of the lens and the reliability of the coating. Good substrate clear and bright, long use time and not easy to yellow; And some lenses do not take long to turn yellow, and even the coating falls off. Good lens without a scra...Read more »
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The lens is yellow Reduce visual definition, increased the burden of the eyeball, myopia degree deepened. There are scratches on the lens Influence lens refraction effect and optical correction performance, lose the role of improving vision. Degree is not Myopic degree early and before the myopic...Read more »
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Lens, I believe that you are not unfamiliar with the industry, every day in the mouth, hand have “lens”. Speaking of lens parameters, many people are also handy, refractive index, specific gravity, film, Abbe number and so on. But do you really understand the lens production process? ...Read more »
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Knowledge of the lens First, lens optics Corrective lenses: the main purpose of the application of glasses is to correct the refractive error of the human eye and increase vision. Glasses with such a function are called “corrective glasses”. Corrective glasses are usually a single len...Read more »
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Tang Dynasty poet Jia Dao has a famous poem: ten years to sharpen a sword, frost blade has not tried. The development of smart glasses has undergone exactly a decade of change and iteration. It’s been a tumultuous decade for the industry, and it’s been a dramatic one on film. Google G...Read more »
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Take classes online, telecommute, shop online… Data shows that the average monthly usage time of Chinese mobile Internet users has reached 144.8 hours. Against this background, one kind of product is in high demand, it is to protect the eyes, relieve visual fatigue as the selling point of a...Read more »
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Color-changing lenses, also known as "photosensitive lenses". Because the chemical substance of silver halide is added to the lens, the originally transparent and colorless lens will become colored lens when exposed to strong light to do protection, so it is suitable for...Read more »
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As myopic frequent occurrence, all sorts of myopic glasses emerge in endlessly, so how did the color change myopic glasses become the problem that everybody cares most. Because discoloration myopia glasses look good, so it is the choice of a lot of myopic patients, below for discoloration myopia ...Read more »
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1、Dual-purpose, avoid the trouble of taking off and wearing Myopia with a refractive degree of the eye, in the summer when there is a lot of constant sunscreen, such as sunscreen to have a pair of sunglasses, but unless wearing contact lenses and sunglasses, otherwise unable to see clearly; And ...Read more »
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The summer is scorching hot, prepares the small long vacation to go outing the friends to be possible comfortably to go out to enjoy the sunlight. But for the friends who wear glasses, but eyes photophobia, can not follow the heart to wear sunglasses or need to wear two glasses of distress. A lo...Read more »
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1、How to choose? When matching glasses, when arrived to choose the link of Lens, Glasses Party is not at a loss? Do Not Know How to choose the Lens. Here’s how to choose the right lens for your degree. 2、The refractive index The refractive index is the ratio of the propagation s...Read more »
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Lens thickness in glasses is influenced by many factors, among which lens power is the main factor. The Lens thickness of High Myopia is thicker than that of low Myopia. However, when it comes to overall thickness, the diameter of the Lens is also important, and choosing a smaller frame can sign...Read more »
