Eye anatomy, computer artwork. At the front of the eye is the cornea, a transparent coating. Behind this is the lens, which is partly covered by the iris. The lens focuses light on the retina at the back of the eye. Light sensitive cells in the retina transmit impulses to the brain via the optic nerve. Behind the retina is the choroid, which contains blood vessels that nourish the back of the eye. The outer layer is the sclera, the white of the eye. The eyeball is filled with a gelatinous substance called vitreous humor. Several muscles hold the eyeball in place and allow it to rotate.
Science Photo Library was founded in 1981 by Michael Marten, one of the authors of "Worlds Within Worlds", a book exploring different ways to observe the universe - from electron micrographs, to images of earthrise taken from the Apollo spacecraft. When Marten started receiving requests for the beautiful images in the book, he had an idea of setting up Science Photo Library.
Since then, Science Photo Library has continued to work alongside world acclaimed photographers and the leading science and medical experts to provide a central source of the best science and specialist imagery available. Although the collection started with scientific images, it has grown to encompass all aspects of science and their impact on everyday life.
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Our return policy is very simple:
If you're not happy with a purchase that you made on FineArtAmerica.com, for any reason, you can return it to us within 30 days of the order date. As soon as it arrives, we'll issue a full refund for the entire purchase price. Please note - Fine Art America does not reimburse the outgoing or return shipping charges unless the return is due to a defect in quality.