Rod Architecture (IMAGE) Max-Planck-Gesellschaft Caption Schematic drawings of the inverted and the conventional rod nuclear architecture (left top and bottom). The more compact heterochromatin with higher refractive index is rendered in red and blue, the less compact euchromatin in green, and the nucleolus in yellow. The drawings on the right side show computer simulations of the light path through the retina with the columnar organization of rod nuclei. The inverted nuclei (top) act as micro-lenses focusing the light onto the light-sensitive outer segments of the rods positioned above the rod nuclei. Conventional nuclei (bottom) scatter the light to a large extent. Credit Image: Montage comprising images from the article in Cell Usage Restrictions None 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.