This is a 42 page PowerPoint on Optical Art, or OP Art as it is known. The PowerPoint describes the art style Op Art and two of main Op Artists. It shows several examples of OP Art. The PowerPoint then explains step by step how to create several different optical illusions using Adobe Photoshop. This is a great lesson for a digital or computer graphics class. It will also work for a regular art class who has access to creating artwork on computers using Adobe Photoshop.