We rely on depth to perceive objects, but not all of us see depth in the same way.
Your field of view is how much you can see without turning your head. When things are closer to us, they take up more of our field of view, which makes them look bigger.
Blind people don't have superhuman ears but their brains can rewire themselves to give them an edge over those who can see.
When looking out of a train window, things close by seem to move past faster than things that are far away.
Flickr/Larry W. Lo
Ada, 7, wants to know why things close to the train windows zoom by really fast, while things further away seem to go by much slower.
Accurate diagnosis of glaucoma requires trained specialists and advanced equipment.
Glaucoma is a slow and silent progressive disease and the second leading cause of blindness, that requires early diagnosis.
United States Geological Survey
Nocturnal insects have eyes that act like cameras to enhance their light-gathering abilities.
Me, myself and eye.
The middle part of our vision sees in a much higher resolution than at the peripheries. But that's just the beginning ...
Could your brain be anticipating what’s there before you even turn your eyes?
Joe Fakih Gomez Photography
As you read this article your eyes will move so the words fall on the central part of your vision. This region is called the fovea and it has excellent resolution when compared to your peripheral vision…
Why do the legs of galloping horses appear as a blur?
Eadweard Muybridge, 1878
What’s the fastest thing you can see? Events that play out over a scale of minutes or seconds are easy to see. Events at much smaller timescales — milliseconds and shorter — can be entirely invisible to…