This video discusses the topic of neuropsychology of visual perception, focusing on the visual perception process and the alterations that can occur in the visual perceptual system. It provides an overview of the neuroanatomy of the visual processing system and the hierarchical manner in which visual information is processed. The video also explores the organization of the visual system into two primary visual streams and discusses the different types of visual disorders that can result from lesions in the brain. It further delves into agnosia, specifically associative and apperceptive agnosias, as well as prosopagnosia. The speaker also touches on visuo-spatial disorders and disorders related to eye movement and visual construction. Understanding the organization and processing of the visual system is crucial in comprehending these disorders.