Recently, we learnt the visual system in class. We can see shape, color and motion through our eyes, and when we process different ways of visual perception, we use different parts of our visual cortex. We also learnt about illusions. The book talks about how some "illusions can illustrate principles of sensation and perception." If we observe, we can see many interesting illusions are very common and useful in real life.
One style of art that makes use of illusions is called Op art (optical art) . It is a perceptual experience related to how vision functions. Op arts use connections between illusions and picture planes that make art abstract but meaningful. When we look at op arts, we see movement, hidden images, flashing and vibration, patterns, or alternatively, of swelling or warping. So op art is not just a piece of art, it is so vivid that we can see life in those abstract figures.
Op Art is also being used in fahion, interior decoration.
Things we studied in psychology classes, like illusions can be very useful in our real life.