Community Eye Health. 2007 Sep; 20(63): 52. Indications
Equipment
A multi-letter Snellen chart (left) and a chart with illustrations Procedure
If using the E or C chart:
Articles from Community Eye Health are provided here courtesy of International Centre for Eye Health How far from the Snellen chart should you position a patient for visual testing?During a vision screening, you will typically be asked to sit or stand 20 feet away from the eye chart.
How do nurses use Snellen charts?To test visual acuity, use a Snellen chart and have the patient wear glasses or contact lenses if they normally wear them.. Have patient stand 20 feet from chart.. Tell the patient to first cover the right eye, then left eye, and lastly read the chart with both eyes.. What does Snellen chart measure?The Snellen Chart uses a geometric scale to measure visual acuity, with normal vision at a distance being set at 20/20.
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