Optical illusions are designed to challenge our brains and test our observation skills by hiding details in plain sight. The challenge involves finding a hidden word among numerous similar words within a short time limit. Successfully solving such puzzles can indicate sharp observational skills and also offers cognitive and relaxation benefits. Optical illusions are designed to challenge our brains and test our observation skills by hiding details in plain sight. The challenge involves finding a hidden word among numerous similar words within a short time limit. Successfully solving such puzzles can indicate sharp observational skills and also offers cognitive and relaxation benefits. Health and Fitness, Health Tips, Exercises & Workout Tips, Diet & Wellness | Times of India Lifestyle