Screen eye strain: what actually helps

Hours in front of a screen tire your eyes. It does not cause permanent damage, but the fatigue is real and has specific causes.

What is happening

Three things at once. First, you blink less: looking at a screen your blink rate drops considerably, and the eye dries out. Second, you hold focus at one close distance for hours, and the focusing muscle fatigues. Third, posture: a screen too high, too close or poorly lit forces your neck and eyes to compensate.

What helps

• Regular breaks. Every twenty minutes, look at something far away for a few seconds. It sounds minor and it is what helps most.
• Blink on purpose. Especially if you wear contacts or already feel dryness.
• Position the screen well. About an arm's length away, with the center slightly below eye level.
• Even out the light. The screen should not be the only lit thing in a dark room, nor compete with a window behind you.
• Check your prescription. An out-of-date prescription, even slightly, multiplies the effort of focusing.

What makes less difference

Blue light gets a lot of attention. The evidence that filtering it reduces fatigue is weak; what is clear is that dryness and sustained focusing explain most of the tiredness. If someone sells you a filter as the solution, that is worth knowing.

When to get it checked

• The fatigue does not improve with breaks and better posture.
• Vision blurs when you shift from the screen to something distant, and takes a while to clear.
• You get headaches most days when you finish working.
• Your eyes feel dry, gritty or burning consistently.

Any of those four is worth a visit: sometimes it is the prescription, sometimes it is dry eye, and those are two different things managed differently. Book an appointment and we will look at it.