---
title: What are symptoms of acute glaucoma?
description: "[Acute angle-closure glaucoma is a sudden, dangerous rise in eye pressure.](https://bluefinvision.com/blog/what-is-usually-the-first-sign-of-glaucoma/) Symptoms are dramatic and require emergency treatment. ## Typical symptom pattern People often develop severe pain and blurred vision over minutes to hours. One eye is usually affected first.…"
url: "https://bluefinvision.com/knowledge-base/topics/symptoms-signs/what-are-symptoms-of-acute-glaucoma/"
updated: "2026-01-22"
category: "Symptoms & Signs"
---

# What are symptoms of acute glaucoma?

[Acute angle-closure glaucoma is a sudden, dangerous rise in eye pressure.](https://bluefinvision.com/blog/what-is-usually-the-first-sign-of-glaucoma/) Symptoms are dramatic and require emergency treatment.

## Typical symptom pattern

People often develop severe pain and blurred vision over minutes to hours. One eye is usually affected first.

- Intense eye pain and headache on one side
- Nausea and vomiting
- Blurred vision with rainbow haloes around lights
- Red eye and a hard, tender eyeball

## Why urgent care is essential

High pressure can quickly damage the optic nerve. Delaying treatment risks permanent vision loss.

- Call emergency services or attend hospital immediately
- Do not wait for symptoms to improve on their own
- Family members may be offered checks because of shared risk
- Preventive laser treatment is often done for the fellow eye