Guide:How to choose your glasses for Endmyopia journey
1. Normalized
The Normalized (normal or distance use) are glasses slightly reduced from a 20/20 correction. The Normalized are used with the distance vision as main Stimulus to improve eyesight.
Distance | Under-correction from full correction | Clear vision distance | Distance vision visual acuity |
---|---|---|---|
By far in normal use | -0.25D^ | Between 2.67m and 8.00m | 20/25 |
By far in normal use | -0.50D^ | Between 1.60m and 2.67m | 20/30 |
By far in normal use | -0.75D | Between 1.14m and 1.60m | 20/40 |
By far in normal use | -1.00D | Between 0.89m and 1.14m | 20/50 |
^Ideal first Normalized
2. Full Correction
The 20/20 correction (full correction rounded to a step of 0.25 D lower) is a correction that you normally get from a licensed optician, who corrects your eyesight to a degree ofvisual acuity only one emmetropic person (or "normal vision") reached on as nellen chart, putting your blur horizon within 0.25 D of the diagram.
When to use Full Correction? From afar when clear vision is needed (when driving or unreadable small print with Normalized on classroom)
3. Differentials^^ for computer
The Differentials (jargon) (near vision, computer glasses or differentials) are glasses or lenses with reduced power for a close-up work. The differentials just allow you to clearly see what you are working on.
Distance between your eyes and you computer | Under-correction from full correction |
---|---|
Between 72.8cm and 88.8cm | -1.25D |
Between 61.5cm and 72.8cm | -1.50D |
Between 53.3cm and 61.5cm | -1.75D |
Between 47cm and 53.3cm | -2.00D |