Forward-Facing Eyes (IMAGE) Rensselaer Polytechnic Institute Caption The eyes of some mammals have evolved to point in the same direction. While animals with forward facing eyes lose the ability to see what's behind them, they gain X-ray vision, which makes it possible for them to see through the clutter in the world. Credit Rensselaer/Changizi 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.