Reading sunglasses are meant for stationary reading outside. Please note: 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 and rated UV400 protection. It is best to choose the same strength reading magnification or the next magnification up from your indoor reading glasses. Please note once again that the reading sunglasses shown below in this category are full lens reading sunglasses. 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.