北京思博特医疗器械有限公司

LEA SYMBOLS® 10-Line Distance Folding Chart

LEA SYMBOLS® pediatric symbols 10 Line Folding Distance Chart with 10' & 20' Notations Only

For screening children ages 2 1/2 to 4. Proportionally-spaced lines; line sizes range from 20/200 to 20/16 (6/60 to 6/4.8) equivalent. The 20/160 (6/48) and 20/100 (6/30) lines have been omitted. 50% spaced rectangle (Massachusetts Visual Acuity Test format) with line sizes from 20/80 to 20/16 (6/24 to 6/4.8) equivalent. Has a hole for hanging the chart on the wall. Includes response key, flash cards, and instructions. 16" x 16" (40.6 cm x 40.6 cm). Folds to 16" x 8" (40.6 cm x 20.3 cm).

10 feet, 3 meters testing distance