If your fish has bulging eyes, don’t be alarmed. Popeye disease is common in pet fish, and in most cases, they will fully recover. A fish’s eyes can bulge due to trauma or an underlying infection, and ...

Chameleons have spiral optic nerves, CT scans and 3D modelling reveal. The discovery explains how the lizards can literally keep an eye out for prey in almost every direction, moving their eyeballs as ...