Ophthalmology• Updated 21 October 2026
Visual Field Test
A test that checks your side (peripheral) vision, mainly for glaucoma.
Results: Same day
Quick Summary
Primary Purpose
To detect and monitor glaucoma and some brain conditions.
What It Measures
Areas of vision you can and can't see.
Preparation
Bring your glasses.
Overview
You look at a central point and press a button when you see lights.
It takes about 5–10 minutes per eye.
What It Measures
Visual field
Blind spots and loss of side vision.
How It's Performed
- 01
Setup
Cover one eye.
- 02
Test
Press a button when lights appear.
- 03
Repeat
For the other eye.
Sources and further reading
Last updated 21 October 2026. For more detail, see these trusted health organisations.
- Glaucoma Tests(opens in a new tab) · MedlinePlus, US National Library of Medicine