In a river of southern China, a “slender” creature with “tiny scales” under its skin paused to rest along the gravel riverbed. Its coloring helped it blend in, but not well enough. Nearby scientists ...

The axial length-to-corneal curvature radius ratio (AL/CR) is negatively correlated with choroidal blood flow in children with myopia, supporting the idea that myopia is an ischemic eye condition, ...