Visual acuity is a measure of how small a detail that is visible can be, and still be identified by a person. The most common way of testing vision is to use an eye chart, (the kind that you see in an ...

There's a photo on the computer screen I'm looking at, but it's blurry, dull, and discolored. There's a grayness to it, and the faces are hard to make out. If I were my dog, this is how I would ...

If you are a human being, then your dominant sense is vision. That means that a person relies more upon visual inputs than any other form of sensory stimulation, and a larger portion of our brain is ...