Wednesday, August 23, 2006

Random Wiki Article

Eyes are so cool. The cornea, specifically, is a cool part of the eye.

The cornea is the transparent front part of the eye that covers the iris, pupil, and anterior chamber, providing most of an eye's optical power. Together with the lens, the cornea refracts light and, as a result, helps the eye to focus. The cornea contributes more to the total refraction than the lens does, but, whereas the curvature of the lens can be adjusted to "tune" the focus, the curvature of the cornea is fixed.

Get your learn on.


Matt said...

Many scientists who study cognition believe that our eyes see a lot more than what our brains allow us to percieve. Our brains filter through the information that our eyes send us and pick out specific patterns in our reality that were used to. For example, it's been said that when columbus's ships headed towards the carribean islands, the natives were unable to see them because they were so unlike anything they had ever seen before. There was no neural network in their brains set up to identify them. (don't know if i believe that, but its an interesting idea)

There was a study done a couple of years ago, where these people put on glasses that completely reversed everything in their vision. They kept them on for three weeks and after about a week, their brains actually connected their neurons in such a way as to flip the image back to normal. When they finally took the glasses off, everything was upside down. Kinda cool...

k2aggie07 said...

Yeah, eyes are really a cool subject. My girlfriend is in optometry school right now so I get to learn about it.

Eyes, really, are a great example of how God works in creation (or evolution, or whatever). Octopus eyes operate in almost the exact same manner as human / mammalian eyes. To me, the likelihood of two wildly divergent life forms having such similar structures is about as close to concrete evidence as you can get.

Plus, they work so amazingly well.