• Snellen wall 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.
• Snellen Wall Chart 14 in x 9 in. And the top center hole, easy to hang on the wall.
• The eye chart assists in measuring visual acuity at a distance of 10 feet away from viewer. 20 feet equivalent for testing at 10 feet (3 meters).
• Snellen chart includes Red and Green color bars for an easy and helpful color vision test. Made of Plastic and washable. Perfect for optometrists, students, offices, and schools.