Harry Potter/Einstein Optical illusion
There are lines drawn in lightly so that we can only see them with our eyes open up close. But when our eyes are almost closed or far away we can't see all of the small and lighter details as well. The lines under Einsteins eyes that look like saggy eyes and the rounding wrinkles around his eyes make up Harry's glasses. This is because when our mind finds things it isn't sure what it is exactly, it changes the shapes to what you have seen before and so that you think you know what it is.
"Funny Optical Illusions | Kappit." Kappit. N.p., n.d. Web. 19 Mar. 2015.