Optical illusion eye test: Find the hidden word SUN in 8 seconds

This article discusses the different types of optical illusions, including physiological and cognitive illusions. Physiological illusions involve captivating images that divert our attention, while cognitive illusions create gaps in perception. These illusions not only entertain but also improve our cognitive skills, such as perception, observation, creative thinking, and problem-solving. Optical illusions have a long history, dating back to ancient Greece, and continue to fascinate people today.