Iris tattooing and implants can give you a whole new look, but experts urge caution due to complication risks.

This is the part of the eye that lets the light in. Lights out please! When it’s dark, muscles in the iris make the pupil ... The rods see the shapes of things, picking out black, white and ...

New research published in Cognition and Emotion provides evidence that subtle changes in eye appearance can shape how people perceive ... However, the role of iris brightness in enhancing these ...