A moment for your vision
Contrast test
Find the direction of faint stripes against a gray background.
- About 3–5 min
- No sign-up
For screening only. This does not replace a professional eye exam.
Avoid glare
Keep screen brightness steady.
Look for stripes
Notice the direction of the pattern.
Choose your answer
Select a direction or no pattern.
A simple guide
How it works
Find the direction of faint stripes against a gray background.
Avoid glare
Keep screen brightness steady.
Look for stripes
Notice the direction of the pattern.
Choose your answer
Select a direction or no pattern.
A stable screen, even lighting and your usual correction.
Understanding your results
Explore how you detect low-contrast patterns in this session.
The result shows pattern-recognition accuracy and estimated contrast thresholds across several stripe sizes. Few staircase reversals mean greater uncertainty. Monitor brightness and viewing distance influence the estimate.
Scope and limitations
For screening only. This does not replace a professional eye exam.
This is a screening result, not a diagnosis. Screen calibration, brightness, viewing angle and room lighting can change what you see.
Frequently asked questions
What to have ready
A stable screen, even lighting and your usual correction.
What you’ll learn
Explore how you detect low-contrast patterns in this session. For screening only. This does not replace a professional eye exam.