What is ilusion optica?

Illusion optica, also known as an optical illusion, is a visual phenomenon that causes the brain to perceive an image or perspective differently than it actually exists in reality. There are several types of illusions, including geometric, physiological, and cognitive illusions. Geometric illusions involve manipulating the shape or size of an object to create distorted perception, such as the famous Muller-Lyer illusion. Physiological illusions are caused by the eye itself, such as the Hermann grid illusion or the Troxler effect. Cognitive illusions involve misinterpreting information or context to alter perception, such as the Necker Cube or the Kanizsa Triangle. Optical illusions can be used for entertainment, but they also provide insights into the way our brains interpret visual information.