Screen Time & Your Eyes: What the Research (Really) Says

In today’s connected world, screens are inescapable. From checking emails and reading news to video calls and scrolling through social media, our eyes are working harder than ever. But what does all this screen time really mean for your vision—and your long-term eye health?

At Bellamy Eyecare, we’re often asked about the effects of digital devices on the eyes. So, in this article, we explore what the latest research says, bust common myths, and offer practical, expert-led advice to help you protect your eyes in a screen-filled world.

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📱 The Rise of Screen Time

Studies suggest that adults in the UK now spend over 10 hours a day on screens—including phones, tablets, laptops and TVs. For many, this is a mix of work, leisure, and essential daily tasks.

But screen use isn’t just an adult problem. Children and teenagers are increasingly glued to screens too—for schoolwork, socialising, and gaming. In fact, children aged 5–16 in the UK spend an average of 6.3 hours a day using digital devices. As screen exposure increases, so does the risk of eye strain and, in younger patients, the development of myopia (short-sightedness).

🔍 What Happens to Your Eyes During Screen Use?

Our eyes are constantly adjusting when we use digital screens—focusing, refocusing, and interpreting bright, backlit images for long stretches of time. This sustained close-up work can be tiring for the visual system, especially if we don’t take breaks.

One of the first things that changes when you look at a screen is your blink rate. People blink far less frequently—sometimes as much as 60% less—when focusing on a screen, which causes the eyes to dry out. This can result in stinging, burning or gritty sensations.

Screens also challenge the eye’s focusing mechanism. Maintaining focus at close range for extended periods puts strain on the eye muscles, leading to fatigue and difficulty switching focus to distant objects (like looking up from your laptop to see across the room).

Add to that the constant exposure to glare, screen brightness and contrast changes, and your eyes are doing a lot of work—often without the rest they need. Poor posture while using screens only compounds the issue, with neck and shoulder tension feeding into headaches and eye discomfort.

Altogether, these symptoms are commonly referred to as digital eye strain—and they affect most people who spend significant time on digital devices. The good news? With a few changes to your environment and habits, and the right lens support, these symptoms can often be managed very effectively.

To sum this up:

• Blink rate drops by up to 60%, leading to dry, irritated eyes.
• The eye’s focusing system becomes fatigued, resulting in blurry vision and discomfort.
• Glare, brightness and contrast changes can strain the visual system.
• Poor posture when using screens contributes to tension headaches and visual fatigue.

Most people experience some degree of digital eye strain—symptoms include sore eyes, blurred vision, headaches, difficulty focusing, and tiredness.

🧒 Screen Time and Children

One of the more serious concerns linked to screen time is the growing rate of myopia (short-sightedness) among children and teenagers.

Myopia is a condition where distant objects appear blurred because the eye is too long or the cornea too curved. While it’s often genetic, environmental factors—including prolonged near work and a lack of outdoor time—are now recognised as major contributors.

Children who spend several hours a day on screens, especially at close range (like phones or tablets), are at greater risk of developing myopia and earlier. Earlier onset means more time for the condition to worsen—potentially leading to high myopia, which is associated with a greater risk of retinal detachment, glaucoma, and macular degeneration later in life.

The good news? Research shows that reduced screen time and increased outdoor time, especially in natural daylight, can slow the onset and progression of myopia. The World Health Organisation and Royal College of Paediatrics and Child Health both recommend:

• Children under 2 years:
  👉 Avoid screen time altogether, except for video chatting with family.

• Ages 2 to 5:
  👉 No more than 1 hour per day, with a focus on high-quality, supervised content.

• Ages 6 to 12:
  👉 Ideally no more than 2 hours of recreational screen time per day, excluding schoolwork. Encourage frequent breaks and outdoor activity.

• Teenagers (13+):
  👉 No strict daily limit, but screen time should not interfere with sleep (8–10 hours), physical activity (at least 1 hour), or face-to-face interaction.

At Bellamy Eyecare, we offer advanced solutions like orthokeratology lenses and myopia control spectacle lenses to help manage and minimise myopia progression.

💡 Myth-Busting: The Truth About Blue Light

Blue light is one of the most talked-about topics when it comes to screen use. But there’s a lot of confusion around what it actually does.

• Blue light from screens does not damage your eyes or lead to blindness.
• However, it can interfere with your body’s natural sleep rhythms, particularly when you use screens before bedtime.

That’s why many people choose blue light filter lenses, especially if they use screens late into the evening. These lenses may help reduce visual fatigue and support better sleep—but they’re not essential for everyone. Some people just feel more comfortable when wearing blue light filters. We’re happy to advise whether they might benefit you.

🛠️ 5 Simple Ways to Reduce Eye Strain

1️⃣ Follow the 20-20-20 Rule

Every 20 minutes, look at something 20 feet away for 20 seconds. It’s a small act that makes a big difference by relaxing the focussing muscles within the eyes

2️⃣ Position Your Screen Properly

Your screen should be at arm’s length and positioned so that the top is just below eye level. This helps reduce strain on both your eyes and neck. Consider using a monitor stand or adjustable laptop riser if you work at a desk.

3️⃣ Optimise Your Lighting

Avoid harsh lighting and glare from windows or overhead lights. Use soft, ambient lighting and position screens perpendicular to windows to prevent reflections. Anti-glare screen protectors can also be helpful in reducing visual stress.

4️⃣ Blink More Often

It may seem simple, but people blink far less often when using screens—sometimes only a third as much as normal. Make a conscious effort to blink fully and frequently. This helps keep the eye surface moist, reducing dryness and discomfort. Using lubricating eye drops during long screen sessions can also help.

5️⃣ Consider Custom Lenses 🕶️

If you wear glasses, it’s worth exploring lenses specifically designed to support visual comfort during extended screen use. These are not one-size-fits-all solutions—they’re tailored to your work environment, screen habits, and visual demands.

Anti-reflective coatings are one of the simplest and most effective upgrades. They help minimise glare from screens and overhead lighting, allowing your eyes to relax and focus more easily, especially in offices or bright indoor spaces.

Blue light filter lenses are another option. These are particularly useful if you spend time on screens late into the evening. While blue light doesn’t damage your eyes, it can disrupt your natural sleep cycle. Blue light filters soften the harshness of digital screens and can help reduce eye fatigue by supporting your circadian rhythm.

Occupational lenses – For people who spend much of the day switching between screens, documents, and colleagues across a desk, occupational lenses (also known as computer or office lenses) offer multiple focus zones. These are specifically designed to optimise vision at intermediate and near distances—perfect for reading emails, attending video calls, and working across multiple monitors.

At Bellamy Eyecare, we carefully assess how you use your eyes throughout the day before recommending the most suitable lens design. We work with premium lens brands like Seiko to offer bespoke enhancements that align with your daily routine. Even small changes—like a tailored lens coating or intermediate correction—can transform your visual comfort, especially if you’re spending 8+ hours in front of a screen.

🧑‍⚕️ When to Seek Expert Help

Digital eye strain is common—but it’s important not to ignore persistent or worsening symptoms. If you regularly experience blurred or fluctuating vision, frequent headaches, dry or red eyes, or find it difficult to switch focus between near and far objects, it could be a sign that your eyes need support.

For children, the signs may be more subtle. If your child often holds screens very close to their face, squints when trying to focus, rubs their eyes frequently, or complains of tired eyes or headaches, it’s worth booking a professional assessment. These symptoms could indicate vision issues, eye strain, or the early stages of myopia.

At Bellamy Eyecare, our thorough 45-minute eye exams allow us to investigate your symptoms in depth. We don’t rush or cut corners. Instead, we take the time to get a full picture of your eye health using advanced diagnostic tools—so you can leave feeling reassured, informed, and in control of your vision. We use advanced diagnostic tools to catch even the smallest changes in your vision and eye health.

✅ Final Thoughts

Screens are here to stay—but that doesn’t mean your eye comfort has to suffer. With a few simple strategies and the right support, you can enjoy screen time without the strain. At Bellamy Eyecare, we’re here to help you protect your vision now and for the future—whether you’re managing tired eyes, choosing the right lenses, or concerned about your child’s eyesight.

Book your appointment today and take the first step towards clearer, more comfortable vision. 👓