The Amsler chart
By looking at an Amsler chart you can monitor your central visual field:
The Amsler test
- Wear the glasses you usually wear to read (if you use glasses to read).
- Hold the chart about 30cm (12 inches) away from your face.
- Cover each eye in turn. With the other eye look at the black dot in the middle of the chart. Are the lines all straight? Do you see any distortion, or any broken, wavy lines? Do you see any missing patches?
- Check the other eye.
- If you see anything unusual, you should contact your local optometrist straight away.