Amblyopia, often referred to as a “lazy eye”, is a condition where an eye is unable to see clearly due to neurological neglect. This occurs as a result of either strabismus (eye-turn) or an untreated refractive error. The brain learns to ignore an eye that does not have proper optic nerve development in order to avoid either double vision or blur. As a consequence of the brain receiving input from only one eye, depth perception or seeing in three dimensions does not occur. Vision therapy treats amblyopia by teaching the brain to receive feedback from both eyes in order to increase acuity and binocular functioning. “Learning to see” at any age is the basis of amblyopia treatment.