Optical illusions are an excellent way of testing your observation skills and challenging your brain. These brain teasers have a tendency to trick the mind and eyes, and it becomes difficult to identify concealed objects in a crowded image. Today, we have an exciting challenge for you! Optical illusions are an excellent way of testing your observation skills and challenging your brain. These brain teasers have a tendency to trick the mind and eyes, and it becomes difficult to identify concealed objects in a crowded image. Today, we have an exciting challenge for you! Health and Fitness, Health Tips, Exercises & Workout Tips, Diet & Wellness | Times of India Lifestyle