Optical illusions are interesting visual phenomena that deceive the brain into seeing something differently from what is real. They happen when the eyes report to the brain information that does not match the real thing, causing errors in size, shape, color, or movement. Optical illusions can be categorized into several forms, such as literal illusions, physiological illusions, and cognitive illusions, which influence perception differently. Optical illusions are interesting visual phenomena that deceive the brain into seeing something differently from what is real. They happen when the eyes report to the brain information that does not match the real thing, causing errors in size, shape, color, or movement. Optical illusions can be categorized into several forms, such as literal illusions, physiological illusions, and cognitive illusions, which influence perception differently. Health and Fitness, Health Tips, Exercises & Workout Tips, Diet & Wellness | Times of India Lifestyle