Parkinson's disease may be diagnosed by looking for subtle changes in eye movements and thinning of retina layers.
Some health products haven't been tested for the benefits that they claim to produce. Blue-light blocking lenses are promoted as helping sleep cycles, but there is no evidence to support this.
With online learning and social distancing, kids are spending more time staring at screens and less time outdoors. That can put them at higher risk of myopia and serious eye problems in the future.
Laser surgery is touted as a good way to get rid of eyeglasses, but not everyone is suited for it. Plenty of research should be done before taking the plunge.
Charles Bonnet syndrome refers to visual hallucinations in people with acquired vision loss, and symptoms can last for many years.
Your brain balances messages coming from lots of different places to help you see, imagine, remember and dream.
Research suggests that students from the most disadvantaged backgrounds are the most likely to suffer from uncorrected vision problems.
Glaucoma is a serious disease which, if left untreated, can cause blindness. A professor of optometry explains the risks, process of diagnosis and available treatments.
Myopia is a major risk factor for serious eye diseases. It has become epidemic among children, particularly because of their heavy use of electronic devices.
We rely on depth to perceive objects, but not all of us see depth in the same way.
Our eyes don't grow much at all – but when we're very young, we still need to learn how to see.
Screen time wasn't a issue in the 19th century but that didn't stop concerns over how new developments might damage eyesight
Your field of view is how much you can see without turning your head. When things are closer to us, they take up more of our field of view, which makes them look bigger.
To improve wait times for surgery, Canada needs to fix its health-care system. Developing a national seniors' strategy would be a good place to start.
Many people, from children to the elderly, wear glasses. Andy, age 5, wants to know how they work.
We're used to thinking of our eyes detecting light as the foundation of our visual system. But what's going on in other cells throughout the body that can detect light, too?
Nocturnal insects have eyes that act like cameras to enhance their light-gathering abilities.
New research shows pink cricket balls can be extra difficult to see in those crucial minutes when day turns to night during play.
The fact we are almost totally unaware of this elegant reflex is evidence of the superb, undercover work the balance system does for us.
Glaucoma is the sneak thief of sight, affecting the eyesight of more than 50 million people worldwide. It remains the biggest preventable cause of blindness today.