In a demographically diverse sample of healthy people, Cornell researchers found dramatic changes over the human lifespan in ...

In a study published in Science Advances on Friday, April 18, a group of five researchers stimulated retina cells in participants' eyes, who, afterwards, claimed to have seen a color no human has ...

A group of scientists might have discovered a new color thanks to a unique retina stimulation technique. Using an experimental process that targeted specific photo receptors in the eye, test ...

Five individuals participated in the experiment, which involved shooting pulses of visible-wavelength laser light directly into their eyes to stimulate individual photoreceptor cells on the retina.

Dark spots on the skin, or hyperpigmentation, occur due to an overproduction of melanin. Melanin gives the eyes, skin, and hair their color. Depending on the cause, people may call some types of ...