If evolution occurs through gradations, the critics say, how could it have created the separate parts of the eye -- the lens, the retina, the pupil, and so forth -- since none of these structures ...

Follow me please class. We’re here at the optician’s to get a good look at a human eye and find out how it works. Human eyes are actually spheres. The part that we can see is only just the front.

Not really what you want to hear before flying into battle. The pupil part of the eye, if you’re curious, is the Isle of Faces. This is where the First Men and the Children of the Forest signed ...

Age-related macular degeneration may cause a gradual reduction in your central vision over time, so you might not recognize AMD at first.