Your eyesight allows you to focus on things near and far as you look around each day. Your brain and eyes work together to make out how far away something is. When you look at something far away, your ...

A stereogram optical illusion is a fascinating visual puzzle that hides a 3D image within a 2D pattern. At first glance, it appears to be a random collection of repeating designs or colourful dots.

For the Visual Perception test, in fact, there are many ways, but practising optical illusions in a daily routine improves your depth perception regarding any visual illusion. These types of illusion ...