the.com/eyestrain

means The soreness, dryness, and fatigue that come from staring too long at something — a screen, a page, fine print — without enough breaks.

from A straightforward 19th-century compound of 'eye' plus 'strain,' the same 'strain' you'd use for a pulled muscle — the idea being that eyes, like any overworked body part, could be strained from overuse. It entered common use as close reading, factory inspection, and later electric lighting and screens gave people more reasons to fix their gaze for hours at a time.