Everyone can see the marble tiles but you have 20/20 vision if you can spot the fallen razor blade in under 12 seconds

ONLY those with 20/20 vision can spot the fallen razor blade on the floor in under 12 seconds.

Think you have what it takes? It may be harder than you think but you may have sharper eyes than we think.

Redditor Alleviate24 shared the optical illusion in a post.

"Find the razor blade that fell out of my box cutter at work today," they said.

The challenge proved tricky for those who tried it.

"That was a hard one," said one commenter.

Others agreed that it was difficult to find the metal razor blade with the floor's grey pattern.

"Blends pretty well," said one viewer.

"God dammit, it’s like looking for Legos on an Afghan rug," joked another.

One Redditor shared what they thought was the easiest solution to finding the razor blade.

"Just lay down on the floor and roll all over... once you see a red trail, then the razor will be at the beginning," they joked.

"I actually chuckled a this. I'm positive this is the best solution," said another.

What about you? Did you find the razor yet? If not, we've attached the solution below.

Try your hand at another puzzle if you dare.

Only those with 20/20 vision can spot the cat hidden among the cacti in under 15 seconds.

While the first challenge may have been cutting-edge, this one is just as difficult.

While at first glance, the photo appears to be a field of prickly cacti, look closer.

We promise there's a hidden cat there, you just can't see it — yet.

Set your timer for 15 seconds and get set, go!

The clock is ticking, but we're sure you can spot the animal with a bit of effort.

If you've managed to find it, congratulations!

For a hint, we've attached the solution below.