Test your eyesight and colour vision with this fun optical illusion challenge. ... If your eyes are sharp and your vision is perfect, you should be able to see the number hidden in the circle.

Think you’ve got sharp eyes? Our today’s optical illusion is putting vision to the test! Hidden among rows of 58s and 85s is a sneaky pair of 55s—and only those with 6/6 vision are said to spot it.

Color Vision Deficiency Test is a screamer game by Liquid Generation, released in a series of Sabotage pranks, which is disguised as a color blindness test.

This vision strength test reveals just how sharp your vision is, but only a very small percentage of people can pass all five stages. And women are better at it than men.