This page hosts our interactive Amsler Grid test. It’s a quick way to check whether straight lines near the center of your vision look wavy, bent, missing, or blurred. Use it for regular self-monitoring.
Self-check for central vision changes. Calibrate once, then Start. Test one eye at a time.
Quick Guide
- Lighting: Sit in good, even light. Put on your reading glasses if you use them.
- Calibration: Match the box to a credit card’s width (85.6 mm). Use +/− for fine tuning.
- Eye: Select the eye you’re testing. Cover the other eye with your palm or patch (don’t press).
- Start: Click Start Test. Keep your head still at your typical reading distance.
- Fixate: Stare at the center dot. Do not move your gaze.
- Look for problems: Without shifting your eyes, notice if lines look wavy, boxes look warped, or any area looks missing/gray.
- Mark: Click Mark, then tap the spots on the grid where you saw distortion or a blank area. Repeat to add multiple marks.
- Review: Scroll down to Marks to see distance (mm), angle (°), and region (e.g., Lower-Center, Upper-Right).
If you notice new or worsening distortions, contact an eye-care professional promptly.
Marks
None yet. Click Mark and tap distortion/blank spots on the grid.
| # | Offset (mm) | Angle (°) | Region |
|---|
What to do with results: Save the PNG and compare with future tests. Worsening or new marks? Book an eye exam.
Important: This is a screening tool—not a diagnosis. If you have sudden vision loss, a dark curtain, many new floaters/flashes, or increasing distortion, seek urgent care.
Detailed tips & FAQs
- How often? Many people check weekly. If you’re being monitored, follow your clinician’s advice.
- Why mark spots? It helps you and your clinician see where and how far from center issues appear (in mm and degrees).
- Both eyes? Test each eye separately. Testing both together can mask problems.
- The grid looks too small/large. Re-do calibration (credit card match) or use +/− to adjust.
Based on the standard Amsler grid described by the American Academy of Ophthalmology—a square grid with a central fixation dot used to detect changes in central vision (wavy or missing lines) and monitor macular disease.
How to take the test
- Wear your reading glasses if you use them and sit in even light.
- Calibrate the on-screen box to a credit card’s width (85.6 mm). Use the +/− buttons for fine tuning.
- Select the eye you’ll test and gently cover the other eye (do not press).
- Click “Start Test.” Keep your head at your normal reading distance.
- Fixate on the center dot. Don’t follow the mouse; keep your gaze locked on the dot.
- Look for issues in your side vision while fixating: wavy lines, warped boxes, gray/blank areas.
- Click “Mark,” then tap each spot where you noticed distortion or a missing patch. Repeat for multiple points.
- Review “Marks.” The table shows distance from center (mm), approximate angle (°) based on your entered viewing distance, and the region (e.g., Lower-Center, Upper-Right).
- Optional: click “Save PNG” to download a report you can compare with future tests.
Reading your results
- No marks: You didn’t notice distortions or blank spots today.
- Some marks: Note the regions and distances. Save the PNG; re-test on another day and compare.
- New or worsening marks: Especially near the center or expanding over time—book an eye exam.
Tips for reliable checks
- Test each eye separately. Testing both together can hide problems.
- Re-do calibration if the grid seems too small/large after resizing or zoom changes.
- Keep the same viewing distance each time so degree estimates remain comparable.
- Use the same screen when possible; store each PNG with a date.
When to seek care
Contact an eye-care professional promptly if you notice new distortions, a gray/blank area (scotoma), a dark curtain, sudden vision changes, or many new floaters/flashes.
Important
Disclaimer: This Amsler Grid is a screening tool for personal monitoring only. It cannot diagnose any condition and does not replace a professional eye examination.
CalcuLife.com
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