Summer Sunglasses and Photochromic Lenses: What You Need to Know Before You Buy

Demand for sunglasses and photochromic lenses, which represent summer, is expected to increase significantly. Demand for photochromic lenses and sunglasses is expected to be even hotter with the expected domestic and international travel boom in the first summer after the predicted heat wave and the corona endemic.

Chemirens, a comprehensive eyeglass lens brand company, said that it would be helpful to know basic information and common sense about items to check when purchasing and maintenance tips during use.

Wearing sunglasses is a priority to block glare, but you should also carefully check the ability to block harmful UV rays. It is effective when equipped with the ‘Perfect UV’ function that completely blocks more than 99% of ultraviolet rays in the maximum wavelength of 400 nanometers.

If you purchase a new one, you can check the approximate performance with the optician’s UV protection demonstration tool, and you can check the details with the help of an expert optician.

In addition, although there are differences depending on the usage environment, after 2 years or more, performance changes such as UV blocking ability occur due to discoloration, yellowing, scratches, and lens deterioration. Eyewear experts advise that it is a good idea to replace sunglasses if deterioration of the lenses, such as the ability to block UV rays, has occurred.

The color depth of the sunglasses is also a check. Even if it’s too dark, it’s not that good. If the pupil is dilated due to darkened vision, the penetration rate of UV rays increases, and it is considered that a coloring concentration of 60 to 80% is acceptable depending on the color.

▲ Image of Chemi Discoloration Lens Photo Aid

The color of sunglasses is also an important checkpoint considering eye fatigue and fashion. The brown color, which brightens the vision, can help driving, and the gray color reduces the burden of color, so it is suitable for general outdoor activities such as hiking. The green system is close to natural color, so it is generally good to wear it for a long time or on the beach because it has less foreign body and fatigue in the field of vision. It is important

In summer, the temperature in the car rises, and if the sunglasses are left for a long time, the coating may be damaged (crack, etc.), and the spectacle lens itself may be deteriorated.

Since the color of the photochromic lenses changes when exposed to ultraviolet rays during outdoor activities, it is important to select the color after confirming the color exactly after the color change and to what extent the color change occurs at the concentration.

An official from ChemiLens said, “There are many cases of misunderstanding that photochromic lenses change darker in summer.” “Because photochromic lenses are sensitive to temperature, the discoloration becomes lighter in the hot summer, and the discoloration becomes darker in the cool spring and fall and cold winter. The fact that it changes color with concentration is also a point to consider when purchasing.”

Like sunglasses, the color of photochromic lenses is something to be aware of before purchasing. In the case of ‘Photo-Aid’, a photochromic lens released by ChemiLens this year, it is showing two colors such as gray and brown. Gray color is a color that darkens like general sunglasses, and is a color that is commonly used for wearing sunglasses after discoloration. Brown is khaki brown, which is slightly darker than the general light brown color, and has less glare, which can reduce eye fatigue, making it a popular product after its launch.

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LOCAL World / Reporter Manami

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