The eye is a complex and delicate mechanism. Knowing the parts of the eye and how they work will help you recognize vision problems or eye health concerns early. This way, you can prevent long ...

The iris is the colored part of the eye that surrounds the pupil. In this article, learn more about the part of the eye responsible for seeing color, its anatomy, and functions.

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 ...