Chart(Distance): Snellen (10ft/3m)-(20ft/6m)

Good-Lite Co Verified independent store

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A double-sided Standard Snellen Chart for testing at 20 ft and 10 ft based on a visual angle of one minute. The front side has a 20 ft Snellen Chart with M notations and the back s ide has a 10 ft chart. Includes lines for 20/10, 20/13, 20/15, 20/20, 20/25, 20/30, 20/40, 20/50, 20/70, 20/100, and 20/200. The green bar is at 20/30 and the red bar is at 20/20. Show more