First used in astronomy to correct for blur in ground-based telescopes due to atmospheric turbulence, adaptive optics is now used in vision science to provide diffraction limited imaging of individual retinal cells and to determine the effect of ocular aberrations on the visual acuity and accommodation control. This book provides an introduction to adaptive optics as applied to vision science. The aim is to make the topics tangible for someone completely new to the field, regardless of their discipline. It covers all main concepts including how to develop a basic system from the ground up and also includes information on the current state-of-the-art systems.