These handheld charts are designed for a 14-inch test distance and indicate they measure visual acuity down to 20/800.
Wall charts use a 20-foot testing distance, while the smaller laminated/handheld charts use a 14-inch test distance (the 14-inch format notes it provides a 20/800 distance measurement).
Common sizes shown include 11 inches × 22 inches and 6.5 inches × 3.5 inches.
Listings include wall-mounted charts intended for 20-foot testing and smaller handheld laminated charts that specify a 14-inch test distance.
The listings show package quantities of either 1 or 5 charts.
