Additional Article

• What is UV(Ultraviolet Radiation)?

  How much do you know about UV radiation? UV rays are invisible to the human eye.While UV radiation is often seen as something harmful, it is not entirely bad.The key is to understand it correctly and have the right knowledge.Benefit 1UV rays can reduce bacterial growth by damaging the DNA of microorganisms.This is why drying laundry in the sun is effective.Benefit 2Moderate exposure to sunlight (UV rays) helps regulate calcium balance in the human body and enables the production of vitamin D, which strengthens bones.It also supports the formation of healthy bones and teeth.Benefit3Exposure to sunlight (UV rays) stimulates the release of serotonin, often called the “happiness hormone.”Serotonin is a neurotransmitter that helps regulate and stabilize our emotions.This is why sunny days tend to make us feel better.In this way, moderate exposure to UV rays can actually be beneficial to our health.However, what happens when we are exposed to excessive UV radiation? Let’s take a closer look next. In mountainous areas, UV levels increase by about 10% for every 1,000 meters of elevation gain. At 2,000 meters, UV exposure rises to approximately 120%, and at around 3,000 meters, it reaches about 130% compared to sea level. Near the ocean or rivers, UV rays reflect off the water surface, adding an additional 10–20% to ground-level UV exposure. Furthermore, fresh snow on a clear day can reflect up to 80% of UV radiation, significantly increasing the risk of eye damage such as photokeratitis and cataracts.“The eyes are exposed human organs.” In mountainous areas, UV levels increase by about 10% for every 1,000 meters of elevation gain. At 2,000 meters, UV exposure rises to approximately 120%, and at around 3,000 meters, it reaches about 130% compared to sea level. Near the ocean or rivers, UV rays reflect off the water surface, adding an additional 10–20% to ground-level UV exposure. Furthermore, fresh snow on a clear day can reflect up to 80% of UV radiation, significantly increasing the risk of eye damage such as photokeratitis and cataracts.The effects of UV rays on the eyes are difficult to notice unless sudden inflammation occurs, such as on snow or near the ocean.However, UV damage gradually builds up in the eye’s lens and may lead to earlier cataracts or presbyopia over time. “A tan is the skin’s natural defense.”When the skin is exposed to UV rays, it produces melanin.This dark pigment absorbs UV light and helps protect skin cells — creating a tan.Melanin is a natural defense against UV damage.However, UV entering through the eyes can also trigger increased melanin production, and excess buildup may cause dark spots and skin issues.Protect your eyes with sunglasses that block 99.9% of UV rays and help reduce eye damage, eye fatigue, and skin troubles.

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• Behind the Development

  Thank you for visiting the FLOAT website. What kind of image do you have of reading glasses? Many people tend to have a less positive impression of them. When we spoke with people who were actually struggling with it, we were surprised to find how many felt that “reading glasses look uncool” or that they felt embarrassed for others to know they needed them.

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