When we look at a screen, we blink less often, sometimes up to half as much. That is how dryness, a gritty feeling, and end-of-day visual fatigue set in.
The 20-20-20 rule
Every 20 minutes, look at something about 20 feet (6 metres) away for 20 seconds. This gives your eyes a brief rest.
Other helpful habits
- Position the screen slightly below eye level, about an arm’s length away.
- Adjust screen brightness to match the room.
- Blink consciously and, if needed, use artificial tears.
If discomfort persists despite these measures, a consultation can rule out an uncorrected refractive problem or dry eye that needs treatment.