Digital Eye Strain: Causes and How to Prevent It

A laptop on a cream desk facing a bright window, with Melavue DayLight yellow lens glasses beside it

By the Melavue team · Sources checked October 2026

Short answer: Digital eye strain, also called computer vision syndrome, is the group of temporary symptoms many people get after long stretches at a screen: dry, tired or watery eyes, blurry vision and headaches (AAO). Estimates suggest it affects 50% or more of computer users (Sheppard & Wolffsohn, 2018). The main cause isn't blue light. It's how we use screens: we blink about half as often, focus up close for hours and fight glare (AAO). The good news is that it's temporary and largely preventable with a few habits, starting with the 20-20-20 rule (AAO).

What are the symptoms of digital eye strain?

The American Academy of Ophthalmology (AAO) lists these common symptoms after long screen time (AAO):

Dry eyes
Blurry vision
Tearing or watery eyes
Headache

Researchers group the symptoms into two kinds: those linked to the effort of focusing up close, and those linked to dry eyes (Sheppard & Wolffsohn, 2018). Many people also notice a stiff neck or shoulders from leaning toward a screen; the AAO notes that poor posture can add to muscle tightness and headaches (AAO).

These symptoms are temporary, and no permanent damage is being done to your eyes (AAO).

What causes digital eye strain?

Blinking less. We normally blink around 15 times a minute, and that can be cut in half when we stare at screens or do other close work like reading (AAO). Fewer blinks mean drier eyes.
Focusing up close for hours. The effort of focusing up close is one of the two main sources of symptoms, and eye doctors look for an uncorrected prescription as part of managing it (Sheppard & Wolffsohn, 2018).
Glare and brightness. Glass screens reflect light, and a screen much brighter or dimmer than the room makes your eyes work harder (AAO).
Contact lenses. They can increase dryness and irritation during long computer sessions (AAO).

Is blue light the cause?

No. The AAO says digital eye discomfort is linked to how much and how we use devices, not to blue light (AAO), and there's no evidence that blue light from screens damages your eyes (AAO). Studies of blue-light filtering lenses haven't shown that they reduce eye strain (Cochrane, 2023). Where blue light does matter is sleep; read blue light and sleep.

Digital eye strain habits: regular screen breaks, screen at arm's length, less glare, artificial tears, regular eye exams

How do you prevent digital eye strain?

These are the AAO's recommendations (AAO; AAO):

Follow the 20-20-20 rule. Every 20 minutes, look at something at least 20 feet away for at least 20 seconds.
Sit at arm's length. About 25 inches from the screen, positioned so you look slightly down at it.
Cut glare. Dim lights near the screen, adjust brightness and contrast, and consider a matte screen filter.
Use artificial tears when your eyes feel dry.
Blink on purpose. Look at something in the distance while blinking and relaxing your shoulders and neck (AAO).
Give contacts a break. Switch to your glasses for long computer sessions.
Get your eyes checked. Correcting a prescription, including reading glasses as you get older, is one of the main ways eye doctors manage digital eye strain (Sheppard & Wolffsohn, 2018).

If symptoms keep coming back after you've changed your habits, see an eye doctor.

Where do glasses like DayLight fit?

Honestly: as a comfort choice, not a fix. The habits above do the work. Some people simply prefer a warmer, softer look on bright white screens during a long day, and that's what DayLight, our yellow lens, is for. It's a light tint that keeps colors fairly natural, so you can work in documents and slides. We keep it light on purpose, because daytime light helps you stay alert (AAO).

For a full desk setup, read blue light glasses for computer work, and to compare lenses, see red vs yellow blue light glasses. When the workday ends, switch to Midnight, our red lens, for the last 1–3 hours before bed.

Every pair is $59.99, comes with a hard case and a cleaning cloth, ships free on orders over $69.99, and has 30-day returns.

FAQ

What is digital eye strain?

Digital eye strain, or computer vision syndrome, is a group of temporary symptoms after long screen use, such as dry, tired or watery eyes, blurry vision and headaches.

What causes digital eye strain?

Mostly blinking less, focusing up close for long periods, and glare. We blink about half as often when staring at a screen, which dries the eyes. Eye doctors also check for an uncorrected prescription.

Does blue light cause eye strain?

No. The American Academy of Ophthalmology says screen-related eye discomfort is linked to how we use devices, not to blue light, and studies haven't shown that blue-light filtering lenses reduce eye strain.

How can I prevent digital eye strain?

Follow the 20-20-20 rule, sit about an arm's length from the screen, reduce glare, use artificial tears when your eyes feel dry, switch from contacts to glasses for long sessions and get regular eye exams.