Sensory Testing and Stereopsis with Nintendo 3DS Game
Robert W. Arnold; Alex Damarjian; Kyle A. Smith
Alaska Children’s EYE & Strabismus
Introduction: Most clinical tests of stereopsis are static images presented to either eye through Polarized or red-green goggles. The Frisby test is a static test viewed without goggles. All these could be memorized by a patient without stereopsis. Some children don’t understand the tests or are goggle-aversive.
The Nintendo 3DS gaming system uses a unique bi-directional pixel screen so 3D dynamic images can be viewed without goggles.
Methods: We developed a 3DS game and compared it to conventional stereo goggle tests (Stereo Fly/Reindeer and pre-school Randot) in a study of normal subjects and strabismic patients. Subjects, after consent, view the game module screen touching the corresponding screen when they first perceive the random one of four discs to dynamically “levitate.”
Results: Twenty-seven subjects, aged 3-63 all completed the game endpoint from 3 to 30 seconds. The game score correlated well with Preschool Randot (r(9) = 0.98, c=0.60 p<0.01), Stereo Reindeer (r(9) = 0.91, c=0.6 p<0.01) and Stereo Fly (r(24)=0.56, c=0.38 p<0.01). The Nintendo 3DS game predicted good versus fair-poor stereo with sensitivity 86% and specificity 92%.
Discussion: The early version of the Nintendo dynamic stereo game reliably stratified normal and decreased levels of stereopsis. Further sensory tests including near acuity and color vision are being developed for this game platform.
Conclusion: A dynamic, interactive 3D video game may help clinical pediatric eye care and research.