How To Distinguish Plain Glasses

The key to counterfeit, counterfeit, or counterfeit and inferior flat-light color-changing glasses are imported well-known brands and high-quality Chinese products.

The characteristics of this product are poor materials, different background colors, rough production and processing, low surface smoothness, and prohibition of brightness; the color of the raw materials is skewed, and there are more residues such as bubbles and urinary stones; under the in-situ stress meter, It can be found that there is a lot of ground stress; the packaging is not standard, and there is no compliance mark.

The characteristics of the defective products

In addition to some of the features of the counterfeit products mentioned, the defective products also have chipped edges, scratches, sand holes, lines, etc. Some spectacle lenses are forbidden in refractive power, some are low in smoothness, and some spectacle lenses are less thick than the management center. 0.7mm, easy to break and tired eyes.

Flat light color changing glasses recognition method

1. Plain light color glasses distinguish the height of the surface smoothness. The identification can be carried out under a 60-watt fluorescent lamp with a gray background. High-quality products do not need surface defects such as significant scratches, black spots, chipped edges, sand holes, wavy lines, and bubbles.

2. Put the plain color-changing glasses in the area up and down 33 cm under your eyes. When you look at the object through myopia glasses, there is no need for significant enlargement or reduction, and no vibrations. Otherwise, it shows that there is something wrong with the quality of myopia glasses.

3. The flat-light color-changing glasses are distinguished according to the equipment, and the three lenses will not change the degree of myopia, and it is better if there is no disorder.

4. Check whether the trademark logo, manufacturer, and quality certificate are genuine and reliable. Spectacle lenses with internationally-known trademarks are usually engraved with the manufacturer’s trademark logo, which can be found by carefully observing the edge of the spectacle lens.

Flat light color changing glasses advantage

Flat light color changing glasses are anti-ultraviolet light, infrared sensor, anti-glare, anti-sand dust layer. X-ray film with anti-electromagnetic radiation effect appeared. Various ingredients are added to make the color tones different and have practical effects of beauty and skin care.