Digital Eye Strain

What it feels like

• Eyes that ache, burn, or feel heavy after a few hours of screen work

• Headaches, usually across the forehead or behind the eyes, that build through the afternoon

• Blurry vision when you look up from the screen, or trouble refocusing between your monitor and something across the room

• Dry, gritty, or watery eyes

• Neck and shoulder tension from leaning toward the screen to see it clearly

• Double vision or words that seem to swim on the page

Why it happens

Screens aren't damaging your eyes. But they ask your eyes to hold a fixed focus at a specific distance for hours, and there are three common reasons why that becomes uncomfortable.

1. Your prescription isn't right for screen distance. Most glasses are made for far away or for reading. Your monitor sits in between, at an intermediate distance. If nothing in your glasses is built for that distance, your eyes have to make up the difference all day. This is especially true if you wear progressives, where the intermediate zone is narrow and you end up constantly adjusting your head to find the “sweet spot”.

2. Your eyes are working hard to team up close. Reading and screen work require both eyes to turn inward and hold there for an extended period of time. When that system is under strain, the result is headaches and words that blur or double. This can happen even if you have perfectly normal 20/20 vision on the eye chart, which is why this often gets missed.

3. You're not blinking enough. Blink rate drops sharply during focused screen work, and incomplete blinks leave the tear film thin and unstable. That's the dryness, the burning, and the vision that clears for a second when you blink hard.

What we do about it
A digital eye strain evaluation goes further than a standard vision check:

• We measure your actual working distance, rather than guessing at a standard one

• We test how well your eyes focus and work together at near

• We evaluate your tear film and meibomian glands if dryness is part of the picture

• We talk through your real setup: how many screens, how far, how many hours, what else you do with your eyes in a day

From there, the answer is usually some combination of a lens designed for your screen distance, treatment for the dry eye component, and a few changes to how your workspace is arranged.

Computer and office lenses
Computer lenses are made for the distance your screen actually sits at, so your eyes can relax into it instead of straining toward it. Office lenses go a step further, giving you a wide, comfortable range from your keyboard out to across the room — which is what most people want if they spend the day moving between a monitor, a laptop, and a conversation with a colleague.

If you already wear progressives and find yourself adjusting your head often to see your screen clearly, a dedicated pair for the desk is often the single change that makes the biggest difference.

Things worth trying at home

• Take breaks. For every hour of screen time, take a 10 minute break by looking far away or walking around your room.

• Drop your monitor. The top of the screen should be at or slightly below eye level, so you're looking slightly down. Looking up widens your eyes and dries them faster.

• Move your monitor back. Arm's length is about right for most people.

• Fix the glare. Position your screen perpendicular to windows rather than facing them, and turn down overhead lighting that reflects off the screen.

• Blink on purpose. A few full, complete blinks when you notice your eyes getting tired does more than you'd expect.

When it isn't your eyes
If headaches are severe, wake you at night, come with nausea, or don't improve when you're away from screens for a few days, please see your primary care doctor. We're gladm to examine you either way, but not every headache is a vision problem and we'd rather you get to the right person.

Related: If dryness is the main thing you're noticing, our Dry Eye Treatment page covers that in more depth.