vision

How Far Could Legolas Really See?

In Lord of the Rings, Legolas claims to be able to count the exact number of horsemen five leagues away — that’s over 27km — even discerning their leader as very tall. But would that ever be possible?


Not Everyone Sees The Same Colour When They Stare At This Spinning Disk

The spinning disk below is a little seizure-inducing, but it’s a lot of fun because not everyone sees the same colour when it spins. Some people see green, others see yellow, a few see red, while some see no colour at all.


A Praying Mantis Wearing Tiny 3D Glasses For 'Scientific Research'

You may have thrown your 3D glasses away a long while back, but not this little critter. After all, this praying mantis has had his glued to his face by scientists in the name of “research”.


Do Colour Blind People See More Colours When They Take Hallucinogens?

If you gave a colour blind person something like LSD or some other sort of hallucinogenic drug, would they see colours they couldn’t before? Interestingly, there is a great deal of crossover in how people affected by protanopia (red light dichromacy) and deuteranopia (green light dichromacy) see the world, as such “red/green colour blindness” is often used as a catchall term. As a side note, this is also by far the most common kind of CVD.


DJI Phantom 2 Vision+ Drone Review: Buttery Smooth Quadcopter Video

DJI has been making remote-control quadcopters for years. Originally, you had to strap your GoPro to it, but last year DJI introduced the Phantom 2 Vision, which had its own integrated camera system. It was pretty sweet, but every tiny turn you took your video shook enough to scramble your viewer’s brain.


This Is What It's Like To See The World As A Fly

Ever wondered how weird-eyed animals like flies and chameleons see the world? Now you can take a look for yourself.


Looking At Orange Light Is Like Drinking A Cup Of Coffee

Light is an incredibly powerful force. Sure, it helps us see and gives us fast internet, but medical researchers keep stumbling upon new positive side effects. A team of Belgian scientists, for instance, just discovered how a 10-minute blast of orange light increases brain activity related to cognition and alertness.


This Simple App Can Train Your Brain To Have 20/7.5 Vision

Everybody wishes they had super powers. The big problem with that shared ambition, however, is that super powers do not exist. Not unless you count super human vision. That does exist, and a new app promises to help you attain it.


Scientists Use Gene Therapy To Stop Six People Going Blind

A team of surgeons in Oxford have used a pioneering new form of gene therapy to stop six of their patients going blind–and it’s hoped the technique could be used to treat blindness more generally.


How The 20/20 Vision Scale Works

With more than 150 million people in the United States (nearly half of the population) requiring some form of corrective eyewear to compensate for visual impairment, chances are you have had your eyesight graded on the 20/20 scale before. If you haven’t, you have probably heard other people saying they have “20/20 vision” or even the phrase “hindsight is 20/20″. The vision scale is so prevalent in Western culture that there’s even a TV news show named after it.