26/08/2026
Most of us grew up hearing it: "Don't read in the dark, you'll ruin your eyes!"
For adults, that's a myth. Reading in low light causes temporary eye fatigue, not permanent structural damage. Your focusing muscles just work overtime and your blink rate drops, leading to heavy eyes or a mild headache that settles once you turn a lamp on.
There is a real catch for kids, though. Late-night reading in the dark can actually contribute to short-sightedness (myopia) in developing eyes. Dim light forces kids to hold pages closer, and without enough bright light, the retina fails to release dopamine which is believed to be an important chemical that tells the eyeball to stop elongating.
Worth noting for adults: if reading feels like hard work in bright, normal light, persistent strain usually points to an uncorrected prescription rather than the lamp.
What’s the eye myth you heard most growing up?