Estimate reading glasses strength by age
In terms of normal age-related vision changes, we humans are relatively alike. One way you can estimate your reading glasses strength is by considering your age. Usually, the following applies:
| Age | Strength |
|---|---|
| 40 – 44 years | +1.0 |
| 45 – 49 years | +1.5 |
| 50 – 54 years | +2.0 |
| 55 – 59 years | +2.5 |
| 60+ years | +3.0 |