Universal Laughs on Instagram: "An optical illusion is when your eyes see something, but your brain interprets it incorrectly. The image itself doesn’t change—your perception does. This happens because your brain uses shortcuts based on past experience (light, depth, color, motion) to make sense of the world. Illusions exploit those shortcuts. Common types: • Geometric illusions – Lines look bent, longer, or shorter than they really are (like the Müller-Lyer arrows). •Color illusions – Colors ap