---
title: "Eye strain | Eye Health Guide"
description: "What causes eye strain, from screen use and uncorrected focusing problems to dry eye, and the simple habits that relieve it. Clinically reviewed."
url: https://eyehealthguide.org/symptoms/eye-strain/
source: Eye Health Guide
licence: "General information only. Cite the URL and the named medical reviewer."
---

Symptom

# Eye strain

Uncomfortable but not harmful

Medical reviewer [Mr Mohamed Mohyudin](https://eyehealthguide.org/reviewers/mohamed-mohyudin/)· Last recorded site review July 6, 2026

### About this review

This page inherits the site’s previous review record. A separate, current article sign-off has not yet been recorded.

[How review works](https://eyehealthguide.org/reviewers/) · [Official biography & credentials](https://mohamedmohyudin.co.uk/author/mohamed-mohyudin/)

Quick answer

Eye strain is tired, achy eyes and headaches after long periods of close or screen work. It is uncomfortable but not harmful, and is usually due to screen use, an uncorrected glasses prescription, or dry eye. Regular breaks, blinking, and an up-to-date eye test usually relieve it.

## When to get it checked

- Persistent headaches that do not improve with breaks and good screen setup
- Double vision or eye strain with one eye drifting
- Eye strain with significant blurring that does not clear
- Strain that started suddenly or comes with eye pain

### On this page ⌄

1. When to get it checked
2. Common causes
3. What can help
4. Frequently asked questions

## Common causes

Eye strain usually comes from prolonged focusing, an uncorrected prescription, or a dry eye surface.

## What can help

- Follow the 20-20-20 rule and take regular screen breaks
- Have an up-to-date eye test, as the right glasses often fix strain
- Blink fully, use lubricating drops, and improve lighting and screen position

## Frequently asked questions

### What causes eye strain?

Eye strain usually comes from long screen or close work, an uncorrected glasses prescription, or dry eye. It is uncomfortable but does not damage the eyes.

### How do I relieve eye strain?

Take regular breaks using the 20-20-20 rule, blink fully and use lubricating drops, improve lighting, and have an eye test to make sure your prescription is correct.

### Can eye strain cause headaches?

Yes. Tired focusing muscles and squinting can trigger headaches. If headaches persist despite breaks and the right glasses, see a clinician.

Your next step

## Take this to your appointment

Write down what has changed, when it started, your current medicines and the questions you want answered. Take these to your eye-care appointment.

Sudden loss of sight, severe eye pain or a dark curtain across vision needs immediate assessment. Do not wait to complete a worksheet.

## Trusted sources

For general background, these organisations provide eye-health information. This list is further reading, not a record that they reviewed this article.

- [NHS — Health A to Z](https://www.nhs.uk/conditions/)
- [Moorfields Eye Hospital NHS Foundation Trust](https://www.moorfields.nhs.uk/)
- [American Academy of Ophthalmology — EyeHealth](https://www.aao.org/eye-health)
- [National Eye Institute (NIH)](https://www.nei.nih.gov/)
- [College of Optometrists — Look After Your Eyes](https://lookafteryoureyes.org/)
- [World Health Organization — Eye care, vision impairment and blindness](https://www.who.int/health-topics/blindness-and-vision-loss)