20 ft: COH (9 Line) Chart Unavailable Children today have many fears

Children today have many fears

Fast ambient change ensures accurate reading in fluctuating ambient temperatures

allowing your patient to press a button and become more involved in the screening process

For each occurrence

20 ft: COH (9 Line) Chart Unavailable Children today have many fears(9" x 14") Sloan optotype chart for vision testing at 20 feet. Features two smaller groups 20 25 to 20 12. 5 for repetitive eye testing. May be wall mounted or used with illuminated cabinets (66003, 66004, 66016, 66090). The Sloan optotypes were developed on the same basis as Snellen optotypes. Sloan optotypes do not use serifs however, but do use a logarithmic geometric progression.