Quick answer: That heavy, tired feeling is digital eye strain. Your focusing muscles are fatigued from hours of close work, made worse by reduced blinking and glare. It isn't damage, and it eases with rest and a few habit changes.
Why your eyes feel heavy
- Long stretches of close focus tire the eye's focusing muscles
- You blink less, so eyes dry out
- Glare and over-bright screens make you work harder
- Not enough breaks, and poor sleep, compound it
How to lighten them up
- The 20-20-20 rule to rest your focus
- Match screen brightness to the room
- Blink fully and use drops if dry
- Take real breaks, and protect your sleep
The bottom line: Heavy, tired eyes after screens are eye fatigue, not damage. Rest your focus with the 20-20-20 rule, fix brightness and blinking, take breaks, and sleep well, and they'll feel light again.
