Optical illusions have fascinated researchers and puzzle fans for ages due to the unique challenge to how a human brain processes visual information. With the illusion of mind, these images can trick perceptions and make us question what we see. Optical illusions have fascinated researchers and puzzle fans for ages due to the unique challenge to how a human brain processes visual information. With the illusion of mind, these images can trick perceptions and make us question what we see. Health and Fitness, Health Tips, Exercises & Workout Tips, Diet & Wellness | Times of India Lifestyle