Eye Care

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Optical Illusions

Are the horizontal lines parallel or do they slope?

Look at this for a few seconds and ask yourself which way is the spiral going? Is it coming at you or going away from you?

How many faces do you see in this picture?

Can you count the black dots?

What do you see in this picture?

Are the up and down lines straight or bent?

Special thanks to the NEI

Additional Related Links

Optical illusions
http://www.michaelbach.de/ot
http://www.colorcube.com

Eye Safety
http://www.optima-hyper.com/eyetests/kidsquiz/KIDSAFE.htm
http://faculty.washington.edu/chudler/eyesafe.html

Parents to read
http://www.allaboutvision.com/parents/toysafety.htm