Difference between revisions of Visual acuity
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→Reading a Snellen chart
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{{main|Snellen chart}} | {{main|Snellen chart}} | ||
* 20/200 would be very bad (possibly just [[myopic]]), | * 20/200 would be very bad (possibly just [[myopic]]), | ||
* 20/70 | * 20/70 is a typical threshold of low vision (being unable to read 20/70 with best possible correction), | ||
* 20/20 is good enough, | * 20/20 is good enough, | ||
* 20/15 is average, and | * 20/15 is average, and | ||