Optical illusions are fun ways to improve kids’ cognitive abilities. An optical illusion image stimulates problem–solving skills and visual memory recall because the child will want to figure out how it works.   

Optical illusions are caused when the brain interprets the object that the eyes see differently. The rods and cones are the optic receptors in the eyes. What the eyes see is transformed into the brain as electric impulses which the brain interprets. The brain tries to make sense of what the eyes see. Optical illusions present something unusual to the brain.  

Via Elizabeth E Charles