OPTOSQUAD presbyopia glasses feature anti blue light lenses that have the ability to block blue light, reducing eye strain during computer use. They include EOF notification and meet all necessary safety standards according to the European regulation (EU) 2017/745 for medical devices (MDR), as well as the EN ISO 13485:2016 standard for medical device quality management systems. With your purchase, a carrying case, cleaning cloth, and support cord are included.