Axon Optics offers three types of prescriptions: Single vision, Progressives, and Readers. We do not offer bifocal or trifocal lenses. Single Vision is $150 and corrects near, distance, or intermediate field of vision. Progressives are $250 and corrects near, distance, or intermediate distance in one lens so you don't have to switch between multiple pairs. Readers are $75 and offers simple magnification for reading.