The cerjo Blue Blocker™ reading glasses are equipped with filter glass to absorb blue-violet light (UV 400) which is emitted from artificial sources of light: LED light bulb and screens (tablets, computers, smartphones,…). Those glasses protect the eyes from the short-wave light which is damaging to the retina. Absolutely trendy, comfortable and genuine, cerjo® readings are glasses for replacement or reserve, very useful if your quality of close vision is no longer so acute. They are conform to the European Standard EN 14139.