Pupillometry measures the size and reactivity of the pupil, the dark circle at the eye’s centre through which light enters. Typically, the pupil contracts and dilates depending on the amount of ...

So, what was a third eyelid doing in a human? Most refer to such bits of tissue as vestigial. The word means a structure that ...

The backbone of the book consists of the 16 chapters on eye anatomy and physiology, but these are leavened by a variety of devices to inform us of the eye's evolution, development and intellectual ...

while the distinct "W"-shaped pupil helps control the intensity of light entering the eye. While the cuttlefish uses its mantle cavity for jet propulsion, it relies on its specialized fins for ...

That coloured circle is called the iris and the black spot in the middle is the pupil. This is the part of the eye that lets the light in. Lights out please! When it’s dark, muscles in the iris ...

Adam Taylor, Professor and Director of the Clinical Anatomy Learning Centre at Lancaster University, explained the eye is ...

Learn about the anatomy of your eyes and how each part of the eye works in order to create visual output. Does your baby really need an eye exam in their first year? Absolutely. The smaller and ...

MIT engineers grew an artificial, muscle-powered structure that pulls both concentrically and radially, much like how the iris in the human eye acts to dilate and constrict the pupil. We move ...