Difference between revisions of Guide:How to choose eyeglasses for Endmyopia journey
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! Distance !! Under-correction!! Clear vision distance !! Distance vision visual acuity | ! Distance !! Under-correction from full correction !! Clear vision distance !! Distance vision visual acuity | ||
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| By far in normal use || -0.25D^ || Between 2.67m and 8.00m || 20/25 | | By far in normal use || -0.25D^ || Between 2.67m and 8.00m || 20/25 | ||
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{{resize|80%|^Ideal first Normalized}} | {{resize|80%|^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. | |||
{| class="wikitable" | |||
! 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 | |||
|} | |||
[[Category:Guides]] | |||