General information

Question text: Do you see symmetrical heat waves in the center part of your vision that move outward (scintillating scotoma) when you experience new flashes of light in your vision like the image below?
Answer type: Radio buttons
Answer options: 1 Yes
2 No
3 I don't know
Label: see symmetrical heat waves in center part of vision that move outward
Empty allowed: One-time warning
Error allowed: Not allowed
Multiple instances: No

Data information

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