contrast sensitivity needs to be assessed in children and adult persons who are unable to respond verbally - 6 figures printed in black 100%, 25%, 10%, 5%, 2,5% and 1,25% - cards 9" x 9" (23x23 cm) includes instructions - reductions in contrast sensitivity can indicate the onset or progression of many diseases and severely complicate activities of daily living
Product Weight of the packaged product: 0.19 kg