Eye
Almost nothing need be said when you have eyes - Tarjei Vesaas, The Boat in the Evening

image by: Tecton
HWN Suggests
Have you ever stopped to think about how amazing the human eye is?
Our eyes are one of the most fascinating and complex part of the body. Actually how much do we really know about them and how they work? Moreover, we rely on them every day, yet we don’t give them much attention until something goes wrong and our vision gets affected. These two organs belong to a general group of eyes found in nature called “camera type eyes”.They take light waves bouncing off the things infront of us and convert those into continuous stream moving images that are accurate and detailed. They also connect us to our surroundings and make so many activities we take granted possible, from driving to reading. So leaving the anatomy part aside, eyes are perhaps the most important…
Featured
How does the human eye work?
The image projected onto the back of our eyes is upside down. Our brain decodes this image so that we perceive it the right way up.
Science still battles to understand the human eye
Neurologists scratch their heads on how we convert the data deluge from our eyes.
Scientists Have Made the Most Powerful Bionic Eye Ever
Scientists say they’ve made a bionic human-compatible eyeball that has nearly 50 times more “sensing” nanowires than there are optic cells in the human retina. The researchers suggest the eventual product could see farther and in finer detail than the human eye, with potential to restore sight or even surpass healthy normal sight—including seeing in the dark.
The Glimmering Gaze of the Human Eye
It’s fascinating to see how much information the eyes provide on a person’s emotional state. When we meet someone, we notice the eyes first. When we speak to other people, we look into their eyes. Eyes express an unspoken language and tell us what we need to know about a person. This is why visual arts of every time and school have taken a particular interest in portraying the complexity and beauty of the human eye.
The Poor Design of the Human Eye
The human eye is a well-tread example of how evolution can produce a clunky design even when the result is a well-performing anatomical product. The human eye is indeed a marvel, but if it were to be designed from scratch, it’s hard to imagine it would look anything like it does. Inside the human eye is the long legacy of how light-sensing slowly and incrementally developed in the animal lineage.
Articles of Interest
The big idea: why colour is in the eye of the beholder
We might think the sky is blue and trees are green, but the truth is rather stranger.
A journey through the human eye
With the ability to distinguish about 10 million different colors and the ability to perceive depth, the eye is one of the most complex organs in the human body. This lesson will discuss how light enters the eye and how our brain determines what image we're seeing.
All the Colors That Human Vision Neglects
To help us survive, our eyes have to make some sacrifices.
Ask a grown-up: how far can our eyes see?
So the answer depends on how big and bright the object is. The sun is 150m kilometres away, but you can see it because it's so big and bright.
Everything we see is a mash-up of the brain’s last 15 seconds of visual information
Our eyes are continuously bombarded by an enormous amount of visual information – millions of shapes, colours and ever-changing motion all around us. For the brain, this is no easy feat. On the one hand, the visual world alters continuously because of changes in light, viewpoint and other factors. On the other, our visual input constantly changes due to blinking and the fact that our eyes, head and body are frequently in motion.
Eye Anatomy
The eyes are essential for our daily experience, since about 70% of information we gather is by seeing.
Eye movement science is helping us learn about how we think
For most of human history if you wanted to know what was going on behind someone’s eyes you had to make your best guess. But since the 1960s scientists have been studying the way eye movements may help decode people’s thoughts. The ability to eavesdrop on the details of people’s daydreams and internal monologues is still science fiction. But research is helping us learn more about the connections between our eyes and our mental state.
How Humans Learn to Communicate With Their Eyes
Human understanding of expressions and what they mean emerges very early.
Important Topic of Physics: Human Eye
The eye is considered one of the most significant and sophisticated sense organs that we have as humans. It assists in object visualization as well as the perception of light, colour, and depth. Additionally, these sense organs are similar to cameras in that when light from the outside enters them, they assist humans in perceiving objects.
Inside the Eye: Nature’s Most Exquisite Creation
To understand how animals see, look through their eyes.
Looking At What The Eyes See
We move our eyes three times a second, over 100,000 times each day. Why isn't life blurrier? Reporting in Nature Neuroscience, psychologist Martin Rolfs and colleagues found that our mind seems to prepare for our eye movements before they occur, helping us keep track of objects in the visual field.
Oh, Please
When did we start rolling our eyes to express contempt?
Our Eyes – Characteristics of a Human Eye
When light getting reflected from the surrounding objects enters our eyes, we see the objects. Therefore, our eyes are essential for us to see everything around us.
The Human Eye Can See Individual Particles Of Light
As much as we may try, humans can’t see in complete darkness. But even in the presence of just a few light particles, special cells in our eyes activate. For decades researchers have been trying to find out the minimum number of photons our eyes can see.
The Meaning Behind the Evil Eye Symbol You See Everywhere
Despite its presence as an increasingly popular fashion trend in the US, the Evil Eye is taken extremely seriously in cultures across the globe where belief in the curse is alive and well.
These Images of Cities Across the World Reveal Things the Human Eye Can’t See
Most of the human population now lives in urban areas. But the growth of these urban landscapes is something that we can only partially appreciate from the ground. Instead, we should also look from the sky.
Understanding the Human Eye
The eye is a fascinating organ, made up of many different parts which all work together with the brain to provide sight. Much like a digital camera, when one part isn’t functioning well, images can be blurry or not even get transmitted to the visual cortex.
What Do We See When Our Eyes Are Closed?
A professor of ophthalmology explains those moving specks of light, geometric shapes, flashes and colors.
What Does it Mean to 'See With the Mind's Eye?'
Imagine the table where you've eaten the most meals. Form a mental picture of its size, texture, and color. Easy, right? But when you summoned the table in your mind's eye, did you really see it? Or did you assume we've been speaking metaphorically?
What's the smallest thing the human eye can see?
It depends on what it means to "see" something. Human eyes can make out objects down to the diameter of a strand of hair. Light microscopes, also called optical microscopes, extend our vision to smaller things...
Why staring at screens is making your eyeballs elongate – and how to stop it
How much extra time on screen have you had in the past 18 months? It may be causing nearsightedness – but there’s hope for reversing it.
Resources
8 Things Your Eyes Reveal About Your Health
Ophthalmologists look into your body in a way no other doctor can, giving them surprising insights into what’s going on.
14 Unbelievable Facts About The Human Eye
Although your retinas have red, green and blue colour receptors, the "red" receptor only detects yellow-green, and the "green" receptor detects blue-green. Your brain combines these signals and turns them into red.

