20 ft: Illiterate Tumbling E (9 Line) Chart CA-WA Each application comes in a

Each application comes in a sterile package

(18" x 18" to 18" x 9") Sloan optotype chart for vision testing at 10 feet

Designed by a nurse

Continuous

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20 ft: Illiterate Tumbling E (9 Line) Chart CA-WA Each application comes in a(9" x 14") Illiterate Tumbling E optotype chart for vision testing at 20 feet. Useful for preliterate or illiterate patients. May be wall mounted or used with illuminated cabinets (66003, 66004, 66016, 66090). The Illiterate Tumbling E optotypes are considered to be the closest to gratings, have the best acuity thresholds, and are some of the most reliable of alternative visual acuity charts.