EVER WONDER WHY...

We don’t notice when we blink?

We blink at least 10,000 times a day to lubricate the eyes. The retina, which captures images at the back of the eye and sends them to the brain, retains the last image it captured for up to a tenth of a second before replacing it with another. This means that when we blink and momentarily deprive the retina of light, there is a record of the last image when the eye opens again. This allows us to see in a continuous flow, rather than in split-second breaks.