We spend an average of 7+ hours daily looking at screens. While this won't make you blind, it does cause real, treatable discomfort — and some preventable long-term effects.
Digital eye strain is real
Symptoms include dry eyes, headaches, blurred vision, and neck pain. The cause isn't radiation — it's reduced blinking (we blink 66% less while staring at screens) and sustained near-focus.
The 20-20-20 rule
Every 20 minutes, look at something 20 feet away for 20 seconds. This relaxes the ciliary muscle and encourages blinking. It's simple, free, and evidence-backed.
Blue light: separating fact from fiction
The myth
Blue light from screens causes permanent eye damage and macular degeneration.
The reality
Screens emit far less blue light than sunlight. There's no strong evidence linking screen blue light to retinal damage. However, blue light exposure before bed does suppress melatonin and disrupt sleep.
The recommendation
- •Blue light glasses: optional for comfort, not medically necessary
- •Night mode on devices: helpful for sleep, not for eye health
- •Sunglasses outdoors: far more important than blue light filters
What actually protects your eyes
- •Regular eye exams — annually if you're over 40 or wear corrective lenses
- •Proper lighting — match screen brightness to ambient light
- •Ergonomic positioning — screen at arm's length, slightly below eye level
- •Artificial tears — preservative-free drops for dry eye relief
- •Outdoor time — natural light exposure reduces myopia progression in children