To see the illusion, you need to stare intently at the small black dot in the centre of the image and move your head slowly toward then away from the screen...



Here's and easy little test for you. Just count how many black dots you can see...



Look at this image and decide if you think the grey lines are straight or not...

Answer: Incredible as it may seem, the grey lines are straight. Print it out and grab a ruler if you don't believe me!


Stare intently at the black dot in the centre of this image and watch the grey shadow disappear...

This is a static image. It was your own eyes that did that!


Stare at this image long enough and you'll start to see it move before your very eyes...

Starting to feel a little sick yet?


OK, a very straight forward test for you. Simply read out loud the following list of colours, reme****ering to read the text only...

The reason you might be struggling with this relatively simple task is that one side of your brain is telling you the word while the other side is showing you the colour.


See this image appear to shimmer as you look at it? If that's not enough follow the ridge around the circle and watch it change into a groove...

You must have a headache by now!


Look at this picture and what do you see, a woman looking to the left or an eskimo looking out into the night...

They're both in there. Trust me!


Just in case you aren't feeling ill enough already, check this one out. To enhance the effect scroll up and down...

Someone pass me a bucket!