Digital Eye Strain: A Practical Guide That Isn't Just '20-20-20'

What is actually happening

• Blink rate drops substantially during concentrated screen work, so the tear film breaks up and eyes feel dry and gritty.
• Focusing muscles hold a near position for hours without a break, which produces an ache and slow refocusing.
• Glare, low contrast text, and screens positioned too high force awkward posture and wider eyelid opening.

Adjustments worth making

• Break up sustained near focus regularly by looking at something far away for a few seconds.
• Put the top of the screen at or slightly below eye level so your lids sit lower and the eye surface dries more slowly.
• Raise text size instead of leaning in; leaning in shortens working distance and increases focusing effort.
• Control glare with window position and matte surfaces before buying filters.
• Consider a humidifier in dry rooms, and ask a clinician about lubricating drops if dryness persists.

About blue light glasses

Controlled trials to date have not shown a consistent benefit of blue-light-filtering lenses for eye strain symptoms. That does not mean nobody finds them comfortable, only that the evidence for the specific claim is weak.

When to get it checked

Persistent headaches, double vision, eye pain, or symptoms that continue after workstation changes deserve a professional eye exam. An uncorrected prescription is a very common cause of what people label as screen strain.