Reading sunglasses are for stationary reading outside. Please note that the entire lens is magnified just like a pair of regular full lens reading glasses except that they are tinted for use in the sun with UV400 protection.  It is best to choose the same strength reading magnification or the next magnification up from your indoor reading glasses. We also carry bifocal sunglasses where only the bottom part of the lens is magnified with a bifocal found at this link Bifocal Sunglasses here.Â