Simple schematic models for the eye have been used for more than a century 32. However, these types of simplified representation were developed with average data and had very limited potential for ...

If evolution occurs through gradations, the critics say, how could it have created the separate parts of the eye -- the lens, the retina, the pupil, and so forth -- since none of these structures ...

Having abnormally small pupils may indicate a health problem. The pupil, the dark center of the eye, determines how much light reaches the light-sensing retina at the back of the eye. Muscles in ...

During the study, changes in participants' pupils were monitored with an eye tracker ... aiming to build a more complete model of how involuntary pupil changes affect our perception of motion.

Whatever light is not absorbed on this return trip passes out of the eye the same way it came in—through the pupil. The presence of the tapetum can be observed at night when a pair of glowing ...

But a study published last week (March 6) in eLife shows that an objective measure—how the pupil varies in size while viewing an optical illusion—reveals differences in perceptual styles and ...

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 ...

The peripheral drift illusion causes us to perceive motion in a still image. A new study shows that the mechanism of this illusion relies on changes in pupil size.