Does reading in dim light damage eyesight?

UNPROVEN
378+ in PubMed PubMed results Last checked April 2026
No direct evidence found that reading in dim light causes permanent eye damage, though it may cause temporary eye strain.
The provided abstracts do not contain any studies that directly examine whether reading in dim light damages eyesight. While research shows that electronic devices can affect tear film stability and cause eye strain symptoms compared to printed materials, there is no evidence of permanent structural damage to the eyes from reading in low light conditions.
Overall confidence
20%
RCT quality
0%
Expert consensus
0%
RCTs found
378+ in PubMed
Largest trial
No relevant trials in abstracts
Date range
2018-2024
Effect size
none
Key studies
Japanese Journal of Ophthalmology · 2019
Reading e-books caused more tear film instability and eye strain than printed books but no permanent damage
PubMed 30604111 ↗
Cochrane systematic review · 2018
Reviewed reading aids for low vision but did not examine lighting effects on eye health
PubMed 29664159 ↗
International Journal of Ophthalmology · 2023
Systematic review of reading tests but no examination of lighting effects
PubMed 36659955 ↗
Caveats
The abstracts provided focus on reading aids, eye diseases, and digital vs. print reading, but none directly study the effects of dim lighting on eye health. More targeted research is needed.

People also ask

Can reading in dim light cause permanent eye damage?
No evidence found that dim light reading causes permanent structural damage to eyes.
Does reading in low light cause eye strain?
Low light may cause temporary eye strain and fatigue, but this appears to be temporary.
Is it better to read printed books or e-books for eye health?
One study suggests printed books cause less tear film disruption than e-books.
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BustMyMyth synthesizes published RCT evidence. It is not medical advice. Always consult a qualified healthcare professional. Sources: PubMed/MEDLINE, Cochrane Library, ClinicalTrials.gov.