New Snellen Plastic Eye Test Wall Chart 22" L X 11" W The Snellen eye chart is the familiar chart with the big letter or symbol at the top and progressively smaller letters at the bottom of the chart down to 20/20 or better. This is a chart for measuring visual acuity at a distance - in other words, how well you can see things that are far away. Non-reflective matte finish Green and red color bars 20' distance 22" x 11"
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