Why do we need to block harmful blue light? Harmful blue light mainly comes from the digital screens we are exposed to in our daily life. We need a pair of blue light glasses to protect our eyes from the harmful blue light from computers, mobile phones and TV. The Yuluki Blue light glasses feature the latest lens technology. Only harmful blue light is blocked, not all blue light should be blocked.Blocking harmful blue light through beneficial blue light which is is good for the eyes.The long-term exposure to blue light with wavelength between 400nm to 450nm is harmful to eye health. Blue light between 480nm and 500nm can affect the secretion of visual melanin and help to regulate physiological rhythm which is related to sleep, emotion, memory, and is actually beneficial to the human body. Why choose us? Yuluki has 25 years of experience as an eyewear manufacturer. We are committed to providing our customers with the best customer service and the highest product quality.We will carefully listen to the suggestions of customers, gain experience and improve the problem, and continue to grow and progress.

Customer Service: If you have any questions about reading glasses, please feel free to contact the seller Yuluki, we will solve the problem until you are satisfied. You have no risk to try!. Convenient Set: 4 pairs of reading glasses for men and women, suit the different scenes, fully meet your different needs. You can keep a pair at your favorite reading spots, so you can always find them handy. Adjustable Spring Hinge: Square frames with adjustable spring hinges and one-piece nose pads provide durability, flexibility and comfort for long-term wearing, it also fits perfectly and look good on any face. Upgraded Blue Light Blocking Lens:Only blocking harmful blue light and through beneficial blue light which is helpful to the eyes.HD transparent polycarbonate lens, no color difference ,clear vision. Blue Light Blocking Reading Glasses:Blue light blocker with UV400 protection.Reduces eye fatigue and dry eye, headache, help sleep better.Suitable for people who use digital screens to work more than 6-8 hours a day.