Featured Article: How Vision Works
Light is what drives life. It’s hard to imagine our world and life without it. The sensing of light by living things is almost universal. Find out all about the amazing inner workings of the human eye. See more »
eye library
Although small in size the eye is an extremely complex organ and captures light and transforms it into impulses that the brain can interpret as images. Discover the different muscles, parts and conditions of the eye.
Articles 1-13 of 13
At night, why does it take my eyes several minutes to get used to darkness?
At night, your eyes adjust to darkness after several minutes. Do you know why it takes that long? Take a look at how your eyes adjust to darkness.
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How Refractive Vision Problems Work
Millions of people have refractive vision problems -- when the eyes get blurry or can't focus on an object. Learn about four major types of refractive vision problems.
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How Vision Works
Light is what drives life. It’s hard to imagine our world and life without it. The sensing of light by living things is almost universal. Find out all about the amazing inner workings of the human eye.
See more »
Light Enters the Eye
As light enters the eye, it strikes the receptor cells of the retina called the rods and cones. Learn how they work in this detailed medical animation.
See more »What does it mean when someone has 20/20 vision?
We all know 20/20 vision is a good thing, but just what do those numbers mean?
See more »Blinking
Blinking can signal tears of sadness, joy, or even flirting. But more than that, they serve an important biological function for your eyes.
See more »Cataracts Animation
Cataracts are a common eye problem, but do you know exactly what they are? This animation explains what a cataract looks like and why they can develop.
See more »Cornea Animation
The cornea plays a crucial role in your ability to see well. This animation shows where the cornea is in the eye and explains its importance.
See more »Glaucoma
Glaucoma results in increased pressure in the eye. This pressure can eventually damage the optic nerve resulting in impaired vision or blindness. Watch the animation to understand how it develops.
See more »Macular Degeneration
The macula is the part of the retina that distinguishes fine details at the center of the field of vision. See how it works in this medical animation.
See more »Retinal Detachments
Retinal detachments are associated with a tear or hole in the retina. See what a retinal detachment looks like in this detailed medical animation.
See more »Seeing
Structures in the eye translate light into images. By way of refraction, the image is actually reversed and upside-down when it reaches the retina. So how do we see images right side up?
See more »The Effects of Diabetes on the Eye
Diabetes can cause severe damage to the eyes. Watch the animation to learn how.
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