Light Touch Inside the Trilobite’s Eye Stephen R. Wilk Exploring an optical and evolutionary oddity: how long-extinct sea creatures viewed the world through calcite eyes. Log in or become a member to view the full text of this article. This article may be available for purchase via the search at Optica Publishing Group. Optica Members get the full text of Optics & Photonics News, plus a variety of other member benefits. Publish Date: 01 November 2020 Add a Comment Please enable JavaScript to view the comments powered by Disqus.