Dry eye & the tear film
The fix
Blink fully, rest the eyes on distance, and keep air from blowing at your face.
Why it happens
A thin tear film protects and focuses the eye. Screen work thins it through low blink rate, partial blinks, and dry moving air — so vision blurs and the eye compensates by working harder.
If you ignore it
Persistent tear-film instability is the core of digital eye strain: fluctuating focus, sensitivity, and fatigue that build across the day.
Wellness & ergonomic guidance, not medical advice.