Depth Perception - Stereopsis Test - Dinosaur Version

This test utilizes lenticular technology to create colorful and less expensive depth perception test without the need for red/green or polarized glasses. It allows for color images to improve interest and images that will resist fading over time.

This test has several challenges: the key one being apparent motion. If the test were set up like the traditional polarized version, the answer could have been obtained by even a monocular patient by moving the test from side to side to see which image moves; like the apparent motion seen in the polarized type tests by closing one eye at a time.

To prevent such a hint, this test was designed differently. One image in each row appears to be closer and one appears farther compared to the circle in which they are housed. If the test is moved or twisted from side to side (which they are instructed not to do) one can tell which ones are different, but not whether they come out or go in.

Contains two test plates:

• Plate #1 features a Dinosaur character which tests gross stereopsis.
• Plate #2 features clip-art characters divided into two separate tests.

Test 1(Rows 1 - 4) tests fine depth perception with range of targets progressing from 400 seconds of arc down to 40 seconds of arc.

Test 2 (Rows A - C) test a row at 400 (Row A), 200 (Row B), and 80 (Row C) seconds of arc targets.

Housed in a black vinyl, diploma style booklet with answer key printed on the back of the booklet. Includes instruction manual.

Book Dimensions: 6” x 8”