10 ft: HTO (11 Line) Chart Rx Form which incorporates the battery and

which incorporates the battery and electrodes into a single-use cartridge

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10 ft: HTO (11 Line) Chart Rx Form which incorporates the battery and(9" x 14") HOTV optotype chart for vision testing at 10 feet. Useful for testing preliterate children from ages 3 5 years old. May be wall mounted or used with illuminated cabinets (66003, 66004, 66016, 66090). HOTV optotypes are practical for use in schools for large vision screenings of younger children. Used for school screening stations nation wide, HOTV charts are also useful for all other preliterate screenings.