Blue Light Blocking Glasses Blue Light PC Glasses Wellington HEV 90% Cut UV Cut Lightweight Unisex Eyeglasses No Prescription (Black) [The Effects of Blue Light & UV Rays on the Human Body] Blue light, strongly emitted from PC and smartphone displays, not only causes eye strain but also headaches, nerve stress, and disruption of daily rhythms. Therefore, appropriate blue light countermeasures, such as using PC glasses, are required. Furthermore, UV rays, when they hit the eyes, can cause excessive melanin production in the skin, leading to skin aging, spots, and wrinkles. [TR-90 Frame Adoption] We have adopted TR90, a popular frame material known for its lightness and elasticity. It provides a comfortable fit that makes you forget you're wearing glasses, and it gently and flexibly conforms to the shape and width of your face, designed to avoid pressure on the head, allowing for long-term use. [JIS Standard Tested Product] This product has been tested by the Japan Optical Goods Inspection Association (based on JIS T 7333:2018). It is certified to cut approximately 35% of blue light, 90% of HEV light, and over 98% of UV rays. *The JIS standard is a widely used standard worldwide, similar to the EN standard. [Unisex Design for Both Men and Women] These are lightweight blue light blocking glasses that can be used by both men and women. The frame shape is designed to fit Japanese faces, and the flexibility of the frame further enhances the fit. [Lightweight & Less Fatiguing] The flexible TR-90 frame and the integrated nose pads, based on ergonomics, reduce pressure on the nose. They gently and flexibly fit the shape and width of the face, providing a light and stress-free wearing experience, which is highly praised. They are characterized by being less tiring even with prolonged use as PC glasses.