An optical illusion challenges you to find a rotten apple hidden among fresh ones within 5 seconds. Optical illusions work by tricking our eyes and brains, leading to fascinating misinterpretations. Readers are invited to test their observation skills and share their results in the comments. An optical illusion challenges you to find a rotten apple hidden among fresh ones within 5 seconds. Optical illusions work by tricking our eyes and brains, leading to fascinating misinterpretations. Readers are invited to test their observation skills and share their results in the comments. Health and Fitness, Health Tips, Exercises & Workout Tips, Diet & Wellness | Times of India Lifestyle