How To Choose a Pair of Suitable Nearsighted Sunglasses for Dyeing, Polarizing and Shading?
The classification of myopic solar lenses is mainly divided into three categories: dyed myopic lenses, polarized myopic lenses, and discolored myopic lenses. The common advantage of these three kinds of lenses is that they are suitable for all myopia frames and sunglasses frames with small radians, and they combine sunglasses and myopia lenses into one, making them more beautiful.
Main features of dyed myopic lenses: Dyed resin lenses are cheap and affordable, but ordinary dyed myopic resin lenses may not have good UV protection without additional coating.
The main characteristics of polarized myopia lenses: The advantage of polarized myopia lenses is that they can effectively prevent ultraviolet rays. The price is relatively high, and they are not suitable for indoor wear. Moreover, the polarized myopia lenses currently sold on the market only have lenses with a refractive index of 1.50. For people with high myopia, the lenses will be thicker.
The main characteristics of color changing myopia lenses: color changing sunglasses are adjusted by the change of the UV intensity index, which can meet the requirements for indoor and outdoor wear and effectively prevent UV. However, if used for driving, the UV index in the car is usually unstable, and the color changing effect is not very ideal.
Factors to consider when purchasing
The tint of the sunglasses is too light; But the color is too dark and easy to affect vision. Generally, the color of tea, gray and dark green is moderate. They have a good light filtering effect, and the scenery you see after wearing the mirror will only become dark without obvious color difference.
For appearance inspection, except that the lens shall be free of scratches, impurities, bubbles and stripes, beauty loving women must pay attention to the anti UVA, UVB and CE marks on the mirror or tag to prevent ultraviolet rays.
The quality of the lens. Place the lens about a foot away from your eyes, look at a fixed object through the center, and then move it up and down gently. If it is a flat lens, the object should not move. If the object moves with the lens or is distorted, it means that the lens is uneven and has bumps. Such sunglasses cannot be bought.
We can't tell whether a pair of sunglasses has the function of UV protection with the naked eye. The manufacturer's express commitment to the product is the only reference for consumers to purchase sunglasses with the function of UV protection. We can see such express marks as "100% UV protection", "UV400", "blocking all ultraviolet rays", "UV protection" and so on on the label and front of glasses of some products.
When buying sunglasses, you should not just follow the trend, but also choose the size and radian of the glasses according to your face shape. In addition, when trying on it, you should also check whether there is vertigo, so as to avoid accidents caused by vertigo similar to wearing inferior sunglasses. It also depends on whether the dialysis degree is high, and it is better to have polarizing function.
Thank you for your reading
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