This test set consists of four oval cards which are printed on both sides with contrast levels of 1.25%, 2.5%, 5%, 10%, 25% and full contrast.
One card is left blank for presentation.
Laminated, making them Durable and washable!
These cards rely on the idea that children and infants respond better to faces than to random symbols or shapes. These cards use the adorable face of the Patti Pics logo to hold the attention of children. Each card is the same size and shape and is printed in six different contrast levels. With the use of the blank presentation card, testing is quick and easy. The child should respond to each contrast level they see. Peek-a-Boo Patti cards are great for testing infants and those with mental disabilities. Great for clinical testing.