北京思博特医疗器械有限公司

LEA SYMBOLS® Pocket Near Card

Pediatric near vision card featuring LEA SYMBOLS®pediatric symbols for testing children or illiterate adults at 16" (40 cm). It's small size makes it easy to carry or store. Front side contains proportionally-spaced lines in logarithmic progression with line sizes ranging from 20/400 to 20/10 (6/120 to 6/3) equivalent. The reverse side features pediatric symbols in 50% spaced rectangle (Massachusetts Visual Acuity Test format). Line sizes range from from 20/100 to 20/16 (6/30 to 6/4.8).

Card measures 3.75" x 6.25" (9.5 cm x 15.9 cm) and testing distance is 16" (40 cm).