Recognition Method Of Discoloration Myopia Glasses

In life, you may sometimes encounter some people wearing "magic glasses". They are transparent and colorless indoors, and gray or brown outdoors. They can be used as myopia glasses or sunglasses. In fact, this kind of magical glasses are color-changing glasses for myopia. Many friends are interested in this kind of glasses, but this kind of glasses can have these two functions only by passing the quality standard. How to distinguish color changing glasses?

The thickness of the two lenses of the color-changing glasses should be the same. If there is one thin and one thick, the color of the lens will vary greatly, which is not good for the eyes. The thickness of a single lens should be uniform. The thickness depends on whether there are streaks, bubbles, spots, cracks, etc. On the surface of the lens, because the surface of the qualified color-changing myopia lens has no scratches, spots or abrasion, the lens is also very smooth when viewed in the sun.

At present, there are only two colors of color-changing glasses on the market: brown and gray. It depends on the discoloration effect of myopia and the speed of discoloration. High-quality discoloration myopia can quickly turn black under sunlight, and the lens can quickly restore transparency in dark places without sunlight. Generally, the faster the color changes, the better. Other effects depend on the quality of the lens itself.

Color-changing glasses can well isolate ultraviolet rays and bring good protection to the wearer. To judge whether the color-changing glasses are good or bad, try them on. The ones that suit you are good. When buying, you should hold the glasses in your hand, use one eye to look at the distant objects through the lens, and shake the lens up and down. Objects in the distance should not have the illusion of movement. Then put it on to see if there are any uncomfortable symptoms, such as dizziness.