Turns out, that’s not actually true — human visual acuity is actually better than that of many animals, especially small animals. So, you don’t need to assume that your housecat is actually ...

to learning how human visual acuity responds to an aberration correction," Roorda said, referencing the three kinds of cone cells in eyes and remedying certain kinds of problems in the human eye.

In this visual illusion picture, a butterfly is hidden in plain sight. Only a visual genius can spot the hidden butterfly in ...

In this visual illusion picture, the number 67 is hidden in plain sight among 97. Only the sharpest eyes can spot the seal in ...

Test your visual acuity and cognitive skills with this engaging optical illusion! The challenge involves spotting a single, ...

With large, grapefruit-sized eyes, it would make sense if humpback whales had decently strong eyesight. So, why do these ...

and brain teasers help our brains to be sharper and motivate us to think hard about how a certain thing is possible which ultimately leads us to understand the workings of a human brain and how ...

The humpback whale has the whale equivalent of nearsightedness, which puts it at risk of being snarled in fishing gear.