---
title: What causes light sensitivity?
description: "[Light sensitivity, or photophobia](https://bluefinvision.com/blog/what-is-photophobia-understanding-light-sensitivity/), is discomfort or pain in bright light. It can occur with many eye conditions or after certain treatments. ## Situations where photophobia occurs Common causes include dry eye, uveitis, corneal abrasions, migraine and recent pupil dilation.…"
url: "https://bluefinvision.com/knowledge-base/topics/symptoms-signs/what-causes-light-sensitivity/"
updated: "2026-01-11"
category: "Symptoms & Signs"
---

# What causes light sensitivity?

[Light sensitivity, or photophobia](https://bluefinvision.com/blog/what-is-photophobia-understanding-light-sensitivity/), is discomfort or pain in bright light. It can occur with many eye conditions or after certain treatments.

## Situations where photophobia occurs

Common causes include dry eye, uveitis, corneal abrasions, migraine and recent pupil dilation. People may squint, avoid bright environments or experience watering and headache.

- Sudden severe photophobia with redness and blurred vision needs urgent assessment
- Managing the underlying eye condition usually improves symptoms
- Sunglasses and hats can offer practical day-to-day relief
- Some medicines and neurological conditions can also contribute