An optical illusion is a riddle where the viewer perceives the image differently. These illusions come in a variety of types, such as puzzles, word riddles, jumbled words, hidden objects, crossing ...

An Optical illusion is a visual phenomenon, which tricks our eye and brain to think about an image differs from its real ...

When a person has 20/20 vision, they can see with standard visual acuity. This refers to the sharpness or clarity of an object 20 feet away. The general standard that corrective measures try to ...

Good vision is a characteristic that is nice to have. Unfortunately, only 35% of adults have 20/20 vision without the use of glasses, contacts, or vision-correcting surgery. Though many of us do not ...

Word searches test vocabulary, observation, and intelligence. Solving word puzzles enhances vocabulary and concentration skills. Find the hidden word in 7 Seconds! Word search puzzles have become one ...