This is an image to demonstrate visual 'crowding' and test peripheral vision. Ensure that the red dot in the centre of the image is at eye level and focus on it. While holding your focus on the ...

More than 4.2 million Americans live with glaucoma, a leading cause of vision loss in the nation. Although there is no cure ...

But even if your central vision is intact, you may find it hard to see out of the corners of your eyes. When this happens, it ...

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.