When you take in visual information, it goes all the way to the back of the eye before you even start to process it. This seems counterintuitive. Wouldn’t it make more sense to start processing information at the outer edge of your eye and move inward toward the rest of the brain? Visual processing if often brought up as an example of flawed evolution, but it might just be the most elegant design of all. When you need a black background to create an internal representation of the visual scene in front of you, your eye structure starts to become perfectly suited for the job.
Read more about how you process visual information in the least (or maybe most) intuitive way in my article published on That’s Life [Science].
Science by Emma Dauster 