20 Minute Timer
20-20-20 rule at work and at home: When working on a screen, every 20 minutes look at something 20 feet away for at least 20 seconds, an exercise recommended by the American Optometric Association.
Designer Readers
| 20 Minute Timer 20-20-20 rule at work and at home: When working on a screen, every 20 minutes look at something 20 feet away for at least 20 seconds, an exercise recommended by the American Optometric Association. |
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Readers 1.0 - 4.0 From China |
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Designer Readers |
No Magnification Protection |
Variable Magnification |
Auto Focus Lenses |