A parameter called Abbe number is used to measure the clarity of cheap eyeglasses near me lens. The higher the Abbe number, the clearer the imaging. The lower the Abbe number, the more blurry the image.
In physics, the higher the Abbe number, the lower the refractive index. Due to significant advances in lens materials, auxiliary additives are also used to optimize the Abbe number during lens production. A small number of lenses that balance high refractive index and good high Abbe number have already appeared on the eyeglass mart.
Regarding single lens (single focus) lenses, especially inventory single lenses, the attention they may attract is not as high as that of myopia prevention and control products, but it does not affect their mainstream status in the market.
Single lens has always been active in the promotion of products in the best place to buy eyeglasses due to its advantages such as "wide price, easy adaptation, and fast delivery" (and most importantly, simple fitting). It is widely applicable to those who are in need of glasses for the first time to those with presbyopia.
In recent years, the most successful product story based on a single light is undoubtedly the (still controversial) anti-blue light, none of which. Previously, UV protection, easy cleaning, wear resistance, and so on have also become the focus of the industry.
However, we found that almost all of these are unrelated to the core function of the lens - optical design. Why? Because the design of a single light has no story.
After evolving from spherical to non-spherical many years ago, double non emerged in stages, and then there was no more. Of course, the emergence of free-form surfaces allows for high-end products for single lenses, but they are mainly used in customized lenses.
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