Head of a Blowfly (IMAGE) American Institute of Physics Caption The position and structure at the micron- and nano-scales of the compound eyes of flies provide them a wide angular field of view. Credit D.P. Pulsifer/PSU Usage Restrictions This image may be used only with appropriate caption and credit. License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.