See for yourself.
Your peripheral vision makes up part of your overall field of vision, which is around 190 degrees. However, it’s far from perfect, and sometimes it causes us to see things which don’t really exist. We’ve found a cool way to prove this to you.
All you need to do is focus on the cross at the centre of the picture below, without glancing away. You’ll notice how your peripheral vision turns people’s ordinary faces into those of ’monsters.’