10 ft: SLOAN (13 Line) Chart Discontinued "handwashing is the single most

"handwashing is the single most important means for preventing the spread of infection

eye shield and mask

Suction cup to wall or counter

The Illiterate Tumbling E optotypes are considered to be the closest to gratings

buffered eye rinse

10 ft: SLOAN (13 Line) Chart Discontinued "handwashing is the single most(9" x 14") Sloan optotype chart for vision testing at 10 feet. Letter size tests a range from 10 80 to 10 5. 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.