Display settings
The positioning problem
This is the biggest source of MacBook-specific eye strain and it comes down to a simple geometry problem. A laptop on a desk means the screen is below eye level. Looking down forces you to hunch forward, and it means your eyes are angled downward with more of the eye surface exposed — which accelerates tear film evaporation.
A laptop stand with an external keyboard is the most effective single change most MacBook users can make for eye health. The stand raises the screen so the top is at or just below eye level. This also brings it to arm's length more naturally — most people sitting at a desk with a laptop on it are closer than 50cm, which increases focusing effort.
You don't need an expensive stand. Any stand that raises the screen 10–15cm and holds it stable will do the job.
Reflections
MacBook screens are glossy. In most home and office setups, this means windows and overhead lights create visible reflections on the screen. Position the MacBook so windows are to your side rather than behind you, and no overhead light source is directly above the screen. Matte screen protectors reduce reflections significantly if the environment is difficult to change.
Using an external monitor
A larger external monitor at the right height is better for eyes than a laptop screen in most respects. More pixels mean less squinting. Larger physical size at proper distance means comfortable reading at larger font sizes. And the separate screen lets you position the MacBook itself away from your primary line of sight.
If you use a dual-screen setup with the MacBook beside an external monitor, make sure the primary screen — the one you look at most — is directly in front of you. Hours of looking 30 degrees sideways accumulates into real extraocular muscle fatigue by end of day.
Blink rate and breaks
MacBook users working in cafes or at home often skip structured breaks because the environment feels informal. The eyes don't know that. Blink rate drops, tear film breaks down, and strain accumulates at the same rate as any office session. If anything, laptop use in informal settings tends to involve more time looking down at a screen that's too close — making structured breaks more important, not less.