Blue Light Blocking Photochromic UV400 UV Fashion Glasses for Men and Women [Joopin] Glasses, Rectangular, Ultra-lightweight, Protection,

【Photochromic Lenses】The tint of photochromic sunglasses lenses automatically changes in response to the amount of ultraviolet light. In environments with weak UV light, such as offices, indoors, or on cloudy days, the photochromic function weakens, and the lens color maintains a light base color. Under strong UV light outdoors, the tint darkens, allowing you to adapt to different lighting conditions without changing your glasses. 【Blue Light & UV Protection】JOOPIN blue light blocking glasses use high-quality blue light blocking lenses with high visible light transmittance and low chromatic aberration. By effectively blocking harmful light from entering the eyes, they can alleviate eye strain, protect vision, and improve sleep quality. 【Suitable for Various Situations】These PC glasses are suitable for various situations where you spend long periods of time in contact with electronic displays, such as working in the office, studying, playing games, or watching movies. They serve two purposes in one: as PC glasses indoors and as sunglasses outdoors. 【Stylish Rectangular Frame】Joopin glasses feature a classic rectangular alloy frame design, offering a simple and understated look without sacrificing fashion appeal. They beautifully complement a variety of occasions and outfits. 【Package Contents】The set includes: JOOPIN blue light blocking glasses x 1, cloth bag x 1, and lens cleaning cloth x 1. Perfect for personal use, or as a gift for Father's Day, Mother's Day, birthdays, or anniversaries. What are "blue light blocking glasses"? In this age where computer and smartphone use is commonplace for people of all ages, it's important to be mindful of the effects of blue light on your eyes to protect them. Why not try blue light blocking glasses? 2. How to use blue light blocking glasses: Blue light is everywhere in our daily lives, not only from PC monitors and smartphones, but also from sunlight. Blue light is not only harmful to the eyes, but a certain amount is necessary to maintain our biological and sleep rhythms. It's good for the eyes to receive blue light from the sun during the day and avoid blue light at night. Ideally, blue light blocking glasses should be used when using computers and smartphones, and a separate pair of everyday glasses should be used for each purpose. However, due to the hassle and cost, some people may want to use only one pair of blue light blocking glasses. In such cases, try consciously removing your blue light blocking glasses between PC work sessions to allow your eyes to take in natural blue light. Taking breaks will also help prevent eye strain. In the morning, when there is a lot of blue light, try to take off your blue light blocking glasses as much as possible. Conversely, you should actively block blue light at night. When using a computer, smartphone, or tablet, be sure to take proper precautions with blue light blocking glasses. If you have a habit of looking at your smartphone with your bare eyes before going to bed, use blue light blocking glasses or a blue light blocking film. 3. Is it true that blue light is the cause of eye strain and pain? VDT syndrome (technostress), which develops from using computer displays for long periods of time, has previously been attributed to poor posture, stress, and dry eyes due to reduced blinking. However, recently, blue light emitted from displays is also said to be one of the causes of eye strain. Blue light has the characteristic of scattering easily because it has a short wavelength. The flickering and glare cause the brain to struggle to focus. Also, because the light energy is strong, the eye muscles are overworked as they try to constrict the pupils. This can lead to eye strain, dry eyes, and stiff shoulders and neck.