Features of anti blue light intelligent bifocal presbyopic glasses:There is no clear boundary between the focal points of progressive lenses, which is smooth and does not cause image jumping. Without removing the glasses, you can move your gaze from top to bottom to see different fields of view Lenses. Something at different distances in the middle.Anti blue progressive multifocal glasses are suitable for indoor and outdoor use 24/7, especially for people with presbyopia, such as reading books, newspapers, watching TV, playing games, traveling, collecting, and fishing. They are a thoughtful and practical helper.They can protect the eyes from very low light and clear vision (indoors or before dawn) to the most sunny conditions.The anti blue light intelligent bifocal presbyopic glasses have the following product functions:Product packaging: 1 x anti blue light intelligent bifocal presbyopic glasses