Everyone can see the grumpy old man – but you could have 20/20 vision if you can see his sleeping wife in 11 seconds

THIS mind-boggling optical illusion has even the most seasoned puzzlers scratching their heads trying to find the answer.

The aim of the game is to find the old man’s sleeping wife in just 11 seconds – if you can you might have 20/20 vision.

The image shows a grumpy old man having an afternoon nap.

At first he appears to be alone, but if you look closer you might be able to make out someone else in the picture.

According to the comments on the original Reddit post, this one is a real mind-bender and not many people can spot it without a hint.

Need a clue? Try and make out the hair of the mans wife, if you can you are half way there!

If you still can’t see the female figure, you’re certainly not alone.

One user asked: “Who else couldn’t find the sleeping lady?”

Another commentator wrote: “This is one of the trickiest optical illusions I have seen.”

A third user added: “Even after seeing her. The sleeping old man never leaves for me.”

A fourth wrote: “Despite trying to see a young woman, I only see the old man.”

One helpful commentator gave a big hint, writing: “She’s looking away. Hard to see but the old man’s nose is her jawline.”

Even with that big clue, it’s still not easy to see, so scroll down to find out.

And, don’t be disheartened if you can’t find the woman – as this is one of our most difficult puzzles yet.

Meanwhile, why not try some more tricky brainteasers while you scroll.

Test your visual prowess with this Christmas conundrum by looking for the hidden robin.

Or, give this one a try and spot Rudolf among Santa’s other reindeer.

And don’t stop practising these tricky tasks as, according to vanishing ink magic, they have positive affects on your brain health.

It says: “Brain teasers will stimulate your cognitive ability and also help focus by making you concentrate on one task as a time.”

Below is the answer as well as another optical illusion to try.

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This illusion also had puzzlers stumped.

Everyone can see the panting dog but if you can find his master in less than 11 seconds then you could have 20/20 vision.

The image shows a happy dog wearing a leather collar but his best friend is disguised somewhere in the picture.

Have you found him yet? Here’s a hint.

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