| Characteristic | Single vision | Bifocal/trifocal | No-line bifocal/progressive |
|---|---|---|---|
| - | - | - | - |
| - | - | - | - |
| - | - | - | - |
| - | - | - | - |
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Source
Release date
December 2016
Region
United States
Survey time period
Year ending September 2016
Number of respondents
27,503 respondents
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