Eye strain from reading arises when the focusing and eye movement systems are overworked or inadequately corrected during prolonged near tasks. Poor lighting and posture further increase demand.
Contributing Factors
Uncorrected long‑sightedness, astigmatism, or presbyopia make the eyes work harder to keep text clear. Holding material too close, using very small print, or reading in dim or overly bright light also causes fatigue.
- Inadequate breaks prevent the focusing muscles from relaxing
- Poor co‑ordination between the eyes can lead to double vision or headaches
- Children may struggle to explain symptoms, instead avoiding reading
- Incorrect or outdated prescriptions worsen discomfort
Prevention
Ensuring an up‑to‑date prescription, using appropriate reading distances and lighting, and taking regular breaks all help reduce strain. Eye examinations can identify binocular vision issues that may need specific treatment.
- Maintain a comfortable reading distance of about forty centimetres for adults
- Use good quality, even lighting with minimal glare on the page
- Follow the twenty-twenty-twenty rule during prolonged study
- Seek assessment if headaches, blur, or loss of place persist
