Graham Field Health Snellen Eye Chart
Graham Field Health Snellen Eye Chart
Non-reflective, matte finish with green and red color bars. 20' distance. 22 x 11. 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.
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