Are you ready to take up a challenge that will challenge your observing skills and intellect? Optical illusions do wonderfully strange things with our minds and leave us guessing about what we perceive. Optically, an optical illusion is a picture or pattern that fools the eyes into believing something impossible. Are you ready to take up a challenge that will challenge your observing skills and intellect? Optical illusions do wonderfully strange things with our minds and leave us guessing about what we perceive. Optically, an optical illusion is a picture or pattern that fools the eyes into believing something impossible. Health and Fitness, Health Tips, Exercises & Workout Tips, Diet & Wellness | Times of India Lifestyle