Only those with laser

The tricky optical illusion is challenging puzzle lovers to find the F within a sea of Es

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A tricky new brainteaser is testing people’s power of observation to the test, as only those with laser-sharp vision are able to crack the teaser in 18 seconds or less.

The mind-bending brain tester shows a single F, hidden amongst a plethora of Es, it is your job to find the hidden F as quickly as you can.

While it sounds easy, the puzzle is a bit more difficult than it seems. The letter isn’t concealed and is in plain sight but due to the nature of the image, your mind is likely to play tricks on you and fill in the gaps where there should be an E.

READ MORE: You're of 'extraordinary intelligence' if you can spot the giraffe hiding in this picture

When you're ready, set your timer and take a look at the following image:

Did you manage to spot it in under 18 seconds? Do not worry if you did not, practice makes perfect when it comes to this sort of puzzle, which was shared by FreshersLive. The more you try the quicker your brain will eventually become when it comes to these tricky puzzles. Check out the answer below.

Fancy another optical illusion? Well, in this one people have been struggling to find the horse rider's face hidden in 15 seconds. This difficult one can be tricky since you can only find the man if you rotate the image.

Another one doing the rounds on social media is an image that features a multitude of brightly coloured toy animals. Within the picture, there are lions, hippos, birds, elephants, deer and monkeys all of which are different colours such as yellow, pink, purple and orange.

Alongside all of these animals is a single giraffe (we can’t tell you what colour!) hidden in plain sight. While a lot of people may be unable to locate the giraffe, those with high IQ have been shown to be able to within 11 seconds.