Psychologists at the Universities of Glasgow found that staring at an optical illusion can improve visual acuity and allow you to see small print.
Optical Illusion: 6 intriguing optical illusions could improve your eyesight
6 Cool Optical Illusions That Tell You About How Your Brain Works
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20 amazing optical illusion drawings: How they work & why they can make learning fun, at
Optical Illusions Art Gallery - Little Passports
Discover a new generation of artists creating optical illusions in graffiti, graphic design, photography and sculpture. The Art of Optical Illusion
The Art of Optical Illusion
Optical illusion coloring book: Abstract, geometric, Large print optical shapes coloring book, with amazing art visual Illusions: Optical Illusions Coloring Book for Adults & Kids.: 9798840733974: Laszlo, mandaladigitaldesign: Books
The Scotsman crossword answers: Here are the solutions for our crosswords from Tuesday 22 December to Monday 28 December
You Must Be A Creative Genius If You Spot The Boat Within 8 Seconds!