Tiredness or discomfort in your eyes from doing too much close-up work, like looking at a screen for a long time.
After working on the computer for hours, I started to feel eyestrain and needed to look away.
Aching or tiredness in your eyes which can happen after staring at something for too long, like a book or a screen.
She developed eyestrain from reading under the dim light, causing her to squint and see blurry.