Are screens ruining your eyes? What blue light glasses actually do
Spent a long day staring at your laptop, phone or TV screen?
By evening, your eyes likely need a break. You might be contending with a headache, dry eyes or even blurry vision and you’ve probably wondered: are all these screens doing damage to your eyes?
With so much advice online about eye health, screen time and blue light’s impact on our health, it’s easy to feel confused. So, let’s break down what the science says, what really helps and when it’s worth booking an eye health check.
Related: Do I need an eye test?
What is blue light and how does it affect our eyes?
Blue light is a high-energy light found in sunlight, LED lighting and digital screens. It’s not dangerous on its own, but how we use screens has changed significantly in recent years. We now spend hours staring at devices up close, often without breaks, and that’s where issues arise.
Optometrist Dr Joe Paul explains, 'Blue light itself isn’t harmful in the way many people fear. The bigger issue is how long we spend focusing on a screen without resting our eyes.”
Blue light also plays a role in regulating sleep. Too much at night (especially from phones or tablets) can make you feel alert when you’d rather be winding down. This effect varies between individuals and depends on overall nighttime habits, not just device use.
Digital eye strain: Is it really just a screen problem?
If your eyes feel tired or uncomfortable after a long day on devices, it could be digital eye strain, a common ailment also known as 'computer vision syndrome'. Symptoms often include:
Sore, tired eyes
Blurred vision
Dry eyes
Difficulty focusing.
But here’s the good news: computer vision syndrome doesn’t typically cause permanent damage for most people. It’s more like muscle fatigue. Your eyes are working overtime and just need a break.
“We don’t blink as often when we’re focused on a screen,” explains Dr Paul. “That alone can make your eyes feel dry, gritty or tired.”
So, do blue light glasses really help?
A growing number of Australians now own blue light glasses, but do they work? The short answer: they can help some people, but the science isn’t conclusive.
Research shows blue light glasses won’t prevent eye disease or vision loss. But people do report less eye strain or improved sleep when wearing them, especially late in the day.
If your main concern is blue light and sleep, wearing blue light glasses at night may help reduce alertness before bed. But the biggest improvement usually comes from reducing screen time in the hour before sleep.
There’s a lot of information online around “harmful blue light,” but for most people, it’s the hours of close-up work that causes symptoms, not the blue light itself. So instead of worrying about blue light itself, focus on:
How long you spend on screens
How often you take breaks
Your environment (lighting, posture, humidity)
Regular eye health checks.
Other ways to protect your eyes from screens
While blue light glasses may offer some relief, there are plenty of simple, everyday habits that can make a bigger impact on reducing eye strain. These small changes not only help protect your eyes but can also enhance your comfort during long screen sessions. Here’s a look at some easy eye sight adjustments that can make a difference:
The 20-20-20 rule: Every 20 minutes, look at something 20 metres away for 20 seconds
Blink more often: It sounds small, but it helps reduce dry eyes
Adjust your lighting: Reduce glare by keeping lights soft and even
Move your screen: Your screen should sit just below eye level
Take regular breaks: Stand up, stretch or look out the window every hour.
Getting your eyes tested: when should you see an eye specialist?
Regular eye tests are an essential part of maintaining good vision, especially if you're spending long hours in front of screens. If you notice any signs of eye strain, discomfort, or difficulty seeing clearly, it may be time to consult an eye health professional. Optometrists generally recommended booking an eye health check every two years, or sooner if you notice:
Frequent headaches
Blurry vision
Eye strain that doesn’t ease with breaks
Difficulty focusing
Night-time light sensitivity.
You can use the nib First Choice Network to find trusted optometrists and eye specialists who can assess your eye health. Regular eye tests not only help with vision clarity but can also catch any underlying issues early.
The bottom line is, screens aren’t going anywhere and most of us rely on them daily. The key isto develop healthy screen habits that support overall eye comfort. With the right strategies and regular checks, you can protect your eye health without abandoning your devices.
Ready for an eye refresh? Book an eye health check through the nib First Choice Network and explore some fresh wellbeing tips for working at home at The Check Up.
