Vision & Eye Chart Screen Test
Self-check your vision with a calibrated Snellen acuity chart and Amsler grid on your screen. Per-pixel calibration, instant results, free and offline.
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What is Vision & Eye Chart Screen Test?
Vision & Eye Chart Screen Test brings a calibrated Snellen acuity chart and Amsler grid to your browser. After calibrating to your screen size and viewing distance, letter sizes are physically accurate, enabling a genuine self-screening from 20/200 to 20/20 - plus an Amsler grid for central vision and macular health.
Key Benefits
- Quick vision check without visiting a clinic
- Physically accurate letter sizes via per-pixel calibration
- Amsler grid screens for macular issues standard charts miss
- Instant acuity verdict with clear professional-care guidance
- No camera, no upload, no installation - browser only
Common Use Cases
- •Checking whether your prescription is still adequate between exams
- •Screening family members who cannot visit an optometrist easily
- •Monitoring vision changes after starting new medication
- •Setting up a vision-screening station in a school or workplace
How to Test Your Vision on Screen
- Calibrate the chart: Enter your screen diagonal and viewing distance so letter sizes are physically accurate.
- Read the Snellen rows: Cover one eye and read from top to bottom, then click the smallest row you can read clearly.
- Check the Amsler grid: Look at the center dot and confirm all grid lines are straight, then review your results.
Key Features
- Calibrated Snellen chart from 20/200 down to 20/20
- Amsler grid for central vision and macular health screening
- Per-pixel size calibration based on screen and viewing distance
- Click the smallest readable row for an instant acuity verdict
- No camera, no app installation - browser only
- Guidance on when to seek professional eye care