Peripheral vision is what you see outside your direct line of sight. A visual-field test maps how much of this area you can see while looking straight ahead.
Common methods
- Confrontation test: the examiner moves a finger or object in from the side.
- Automated perimetry: you press a button when you notice lights appearing in a bowl-shaped instrument.
Online "tests" can be interesting, but they cannot replace a professional visual-field assessment.
This article is general education, not medical advice. For any change in your vision or eye comfort, see a licensed optometrist or ophthalmologist.
