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Eliminate the need for reading glasses |
Identifying caller ID on a cellphone |
Read a wrist watch |
Read prescription medicine label |
Read restaurant menu |
Long duration (read book for 1-2 hours) |
| Cannot read within arm's length distance (60 cm) |
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| Can read within arm's length distance (60 cm) but not closer than 40 cm |
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| Can read within arm's length distance (60 cm) but not closer than 40 cm |
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 any discomfort, fatigue or pain is eliminated |
| No current problems with reading, but the user’s age is approaching 42 |
(full Prevention) |