A new study shows that a time stamp can be put on mercury that accumulates in fish eyes, offering a window into their lifetime exposure.

Retinal aging caused by stress produces symptoms similar to those resulting from natural aging, researchers report.

The last common ancestor between octopuses and humans was 500 million years ago, but their eyes are still "remarkably similar" to our own.

Fruit flies can't move their eyes to adjust their vision like we can. But, they've come up with an alternative: they move their retinas.

Variation among primate eye color may be the result of ambient light in their habitats, new research finds.

Audiologist says FDA green light for over-the-counter devices has potential to drive down cost, increase access and innovation.

An eye test that measures how pupils change in response to light could be a way to screen young children for autism.

Why is it so difficult to swat a fly? A team of insect experts explains how a fly’s sophisticated vision allows it to quickly react to visual cues.

Eye doctors are more likely to prescribe brand name eyedrops after small perks from drug companies, research finds.