Difference between revisions of 20/20 correction

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{{For|the the condition of eyes having perfect vision|emmetropia}}

'''''20/20 correction''''' ('''''full correction''''' rounded to weaker 0.25 D step) is a correction you normally get from a licensed optician, which corrects your eyesight up to a degree of [[visual acuity]] that an [[emmetropic]] (or "normal-seeing") person achieves on a [[Snellen Chart]], putting your [[blur horizon]] within 0.25 D of the chart.

'''''20/20 correction''''' ('''''full correction''''' rounded to weaker 0.25 D step) is a [[correction]] you normally get from a licensed optician, which corrects your eyesight up to a degree of [[visual acuity]] that an [[emmetropic]] (or "normal-seeing") person achieves on a [[Snellen Chart]], putting your [[blur horizon]] within 0.25 D of the chart.

If you can see 20/15 or even better, this might mean that you are [[overcorrected]] ('''''full correction''''' rounded towards stronger 0.25 D step). (It is not necessarily considered super-human acuity, but it is unnecessary to correct to this level. Also, 20/15 isn't always a good measurement, as some people can sometimes see 20/20 with blur horizon 0.5 D away or even 20/10 with overcorrection on a bright Snellen)

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 {{For|the the condition of eyes having perfect vision|emmetropia}}
-'''''20/20 correction''''' ('''''full correction''''' rounded to weaker 0.25 D step) is a correction you normally get from a licensed optician, which corrects your eyesight up to a degree of [[visual acuity]] that an [[emmetropic]] (or "normal-seeing") person achieves on a [[Snellen Chart]], putting your [[blur horizon]] within 0.25 D of the chart.
+'''''20/20 correction''''' ('''''full correction''''' rounded to weaker 0.25 D step) is a [[correction]] you normally get from a licensed optician, which corrects your eyesight up to a degree of [[visual acuity]] that an [[emmetropic]] (or "normal-seeing") person achieves on a [[Snellen Chart]], putting your [[blur horizon]] within 0.25 D of the chart.
 If you can see 20/15 or even better, this might mean that you are [[overcorrected]] ('''''full correction''''' rounded towards stronger 0.25 D step). (It is not necessarily considered super-human acuity, but it is unnecessary to correct to this level. Also, 20/15 isn't always a good measurement, as some people can sometimes see 20/20 with blur horizon 0.5 D away or even 20/10 with overcorrection on a bright Snellen)