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General information

Question text: New darkening or graying out of vision
Answer type: Radio buttons
Answer options: 1 Constantly
2 Several times per day
3 Several times per week
4 Several times per month
5 Less than once per month, but several times over the last 6 months
6 Only once or twice in the last 6 months
Label: how often New darkening or graying out of vision
Empty allowed: One-time warning
Error allowed: Not allowed
Multiple instances: No

Data information

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