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 ...

You can see something 20 feet away that others need to be 15 feet away to see. That means your vision is a little sharper ...

You can practice this test at home before your appointment ... which may mean a higher risk of blurred or distorted peripheral vision. Attractive design. Let your child show you what they like.

A new optical illusion eye test is challenging people to find a hidden 508 among a sea of 503s and 305s in just 10 seconds. This brain teaser tricks your perception using visual crowding and pattern ...

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

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.