ST. LOUIS — Google searches for "hurt eyes" spiked nationwide on the day of the total solar eclipse on April 8. NASA and doctors across the nation repeatedly warned the public about wearing necessary ...

Normally, a person's pupils naturally widen (or dilate) in low-light environments to allow more light into the eye. However, in a new study, researchers reported that a person's pupils also dilate ...

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 ...

Gazing into a remarkably detailed digital eye did not stir up latent fears of the omnipotent. At least, that wasn’t the case with the all-seeing eye that I recreated with the Eye Texture Raytracer, a ...

Pupils, which are the dark dots in the center of your eyes. They shrink or widen to control how much light gets into your eye. During the test, your doctor will make sure your pupils are in the right ...

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 ...