LEA SYMBOLS® 10-LINE DISTANCE CHARTS 3 m 52054

This test is most commonly used in the health care of children at the age of 3 to 4 years and in amblyopia screening in many countries.

Features proportionally spaced (logMAR) lines; line sizes range from 20/200 to 20/16 (6/60 to 6/4.8) equivalent, 0.1 to 1.25. The 20/160 (6/48) and 20/100 (6/30) lines have been omitted. The reverse side is black and can be used as the test surface for the Color Vision, test (#260260). Has a hole for hanging the chart on the wall. Includes response key and instructions.

Dimensions: 16" x 16" (40.6 cm x 40.6 cm). Folds to 16" x 8" (40.6 cm x 20.3 cm).

Testing distance: 10 feet/3 meters.

Click here for the 250250 & 250150 Guide.

Przykładowe przeprowadzenie badania :