The colored part of the eye surrounding the pupil is called the iris. It automatically regulates the amount of light entering the eyes by regulating the size of the pupil. Light is the primary ...

The iris is a structure behind the transparent cornea of the eye. It has a circular opening called the pupil that changes size in response to the light level. Your pupils are usually the same size as ...

"Why don't your pupils ever move?," asked Meghan Rolston, 11, a fifth-grader at Butterfield School in Libertyville. In a split second, your brain makes millions of decisions about information gathered ...

Robot vision could soon get a boost thanks to the development of a bioinspired eye that can automatically adjust its pupil ...

This is an older project, but the electromechanical solution used to create this giant, staring eyeball is worth a peek. [Richard] and [Anton] needed a big, unblinking eyeball that could look in any ...

It is commonly known that pupil size fluctuates in response to brightness and darkness during wakefulness. What is less commonly known is that pupil size is also regulated by the autonomic nervous ...