What is blue light? LED and LCD screens emit light from the ultraviolet and blue-violet spectrum, which causes visual fatigue, dry or irritated eyes and migraines. Find out how harmful artificial blue light is! In the long term, exposure to the light of the laptop and the phone will lead to the degradation of the retina and the cornea. Careful! The frame does NOT allow the fitting of lenses with diopters. Do you spend more than three hours in front of digital screens? Protect your vision with a pair of computer protection glasses that neutralize harmful light. You will feel better in just a few days! The anti- reflective lens improves contrast and contributes to reducing eye fatigue/strain and insomnia. Don't know if these screen protection glasses suit you? Anti- reflective glasses can be used for any activity carried out in front of screens (gaming, reading, telecommuting, etc.) Be in step with the latest trends! These round glasses without diopters suit any style. You do not believe? Order and convince yourself! Specifications: For: unisex; Frame style: round; Frame color: green; Materials: TR90 (frame), acrylic (lenses); Lens width: 52mm; Lens height: 46mm; Arm length: 141mm; Nasal bridge: 18mm; Frame width: 136mm. Careful! The glasses are sold without case, cloth or other accessories.