We see contrast because our eyes are always moving
The ability to see contrast is an important visual function, particularly when we are walking down stairs, driving at night or looking for things in bad light.
Contrast sensitivity function – which is different to visual acuity – is the minimum amount of light and dark that we need to see to detect an object or pattern.
Until now, researchers have thought that seeing contrast relies on eye optics and brain processing. However, a new study, published in the journal eLife, reveals that tiny eye movements play a critical role.
Published in Cosmos Magazine.
