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Can anyone tell me the height of the letters at 20/20 and 20/40 on the snellen chart please?

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  • Can anyone tell me the height of the letters at 20/20 and 20/40 on the snellen chart please?


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Answer #1 | 30/12 2013 12:30
If you are 20 feet from the chart, your 20/20 letters should be 8.73 mm. The 20/40 letters should be 17.46 mm tall.
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