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On-line EyeTest - Snellen Chart |
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On-line EyeTest - Snellen Chart |
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Please read the disclaimer, with reference to test accuracy
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In order for a certain degree of test accuracy it is important to follow this proceedure:
Letter height and distance in reality:
Letter A: 88mm in height
Standing Distance from Image: 6 meters
To work out the distance you are required to stand back from your monitor you will need to measure the letter A at the top of the image in millimeters and work out this equation on a calculator:
Standing Distance in Meters = 6 x (Height of Letter A / 88)
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