How Useful Is OCT at Each Stage of Glaucoma?
Each OCT result comes with color-coded maps and numbers. Green usually means “within normal limits,” yellow means “borderline,” and red indicates...
Visualfield
Deep research and expert guides on maintaining your visual health.
Free Online Peripheral Vision Screening
Our visual field test is inspired by the perimetry methods eye care professionals use. Check for blind spots and track changes over time.
Test Your Visionvisualfield
The visual field is the full area you can see while looking straight ahead, including both what you see directly in front of you and what you see out of the corner of your eye. It is measured with tests that present lights or shapes at different locations and record what you notice, which helps map out blind spots or areas of reduced sight. Changes in the visual field can be an early sign of damage to the optic nerve or to the parts of the brain that process vision. Because some eye diseases progress slowly, people often don’t notice gradual loss of peripheral vision until it is advanced, so testing can reveal problems before they become obvious. Losing parts of your visual field affects everyday tasks like driving, walking in crowded places, and avoiding obstacles, making it a practical as well as medical concern. Visual field testing is used together with imaging and eye pressure checks to get a complete picture of eye health. Tests can vary from day to day or be tiring, so doctors look for consistent trends over time rather than relying on a single exam. If you notice new blind spots, increased clumsiness, or difficulty with side vision, a visual field check can help identify causes and guide treatment to protect remaining sight.