Stand Back
Stand Back
 |
 2011 Sun Mountain Zero G Stand bag Black Back Support New NO LOGOs on bag $179.99 Time Remaining: 8d 14h 13m Buy It Now for only: $179.99 |
How many meters/feet do you have to stand back for the reaidn of an eye chart?
and what line are you supposed to be able to read up to?
reading***
Some charts are calibrated to be used at 10 feet instead of 20, so it depends what chart you use.
Even with the 10 foot chart, it is calibrated to give the 20/20 readings, but the letters are half the size of the 20 foot chart.
Second line up from the bottom is the 20/20 line on both, but the distance you should be varies by 10 feet.
