Wow that's really cool!!!!!!

Not falling for that one! There is only a black box with a red dot in the middle. I suspect if anyone said there were no grey stripes the response would be: "See! it works a treat!"

That's very cool.

lol I don't see the grey stripes.

Well, I wrote you a little nove because you asked for explanations. And now I see that I see nothing...
Or is it because you don't have time?
I wondered because meanwhile comments appeared.

Admiral, i used photoshop to see there are grey stipes.

the red dot is on a white line so you concentrate on the white section and see past the gray part.

no offense admiral but if you dont see those lines than either a- ur color blind
b- ur stupid
c- ur blind
or d- all of the above. I think its d

to those people out there, just highlight it

People that can't see the grey stripes have low monitor contrast.

Actually, I have the answer to this direct from an optometrist. In his words, "It's actually a sign of intelligence. When you stare at a static image for a long time, the brain gets bored and simply stores the peripheral imagery for a while until there's a change, at which time it will update the image."

omg it actually works!!!

that was neat

This was very cool. Admiral, you are not stupid at all. Not every person sees things the exact same way. I still can't see the tube in "Tube of illusion". Must we call names when someone has a different viewpoint? Btw, Alana, how can someone not be offended at you calling them blind and stupid? HOW RUDE.

It didn't work. I totally agree with admiral. There is no grey lines! None at all. Usally I get theese in a snap but this one doesn't make sense.

KALA: this one doesn't makes sense?? just because u cant see the grey lines doesnt mean they arent there! read all the comments, almost every1 got it...
it makes sense, try to change ur monitor contrast

when your eyes focus on the red dot, the frey stripes become perifrial. when that happens...the stripes dissappear.

i stare at things alot...like dots and stuff...mostly im in deep thought...but then i realize...it looks like something is trying to cover up the suranding area.a lighter color of the color...just stare at things...with dots...it will mostly work on circals...like..oh a yellow circal! just stare at it..a blueish type of circal will try to cover it...blue background too!

Dude, this is a bad one. there are too stripes in the picture. I had an idea, and it worked. save as the picture, then rotate it. the stripes rotate with it.

OMG thats so weird and cool at the same time!

its because your eye is only concentrating on one thing, so doesnt notice the grey stripes because theyre so faint...just like reading and listening to music at the same time, after a while you only notice one of the two

Sweeeeeeeeeeeeeeet, kinda lame but still cool 2 look at.

highlight it:)

I saw the grey stripes perfectly.
If u cant see them its because ure monitor isnt good enough try adjusting the contrast.

well u see..this isnt reeli an illusion. if u draw a dot on a whiteboard n u focus on it, it will disappear. somehow u focus on the red dot, but there r grey stripes round it, so u stare harder. but wen u read da instructions it sed stare at the red dot n da grey stripes will disapear. u are onli imaginin dem disapear. its a stupid thing reeli n isnt a real illusion

logic dude logic.

im onli 12 n i figured dis out..how old do u hav to be to figur it out?? 100??

people say there aren't any lines, but I just used GNU paint (analogous to MS paint) to check:
"grey":#F4F4F4
"white":#FFFFFF
So they're different.