Stereo Vision Screening with a 3D Tablet Computer

Title Stereo Vision Screening with a 3D Tablet Computer
Author, Co-Author Alice Grasso, Kathleen Vancleef, Ignacio Serrano-Pedraza, Nicholas Port, Don Lyon, T. Rowan Candy, Jenny Read
Topic Binocular Vision/Pediatrics
Program Number
Ballroom A-B

Purpose: Stereovision is an important aspect of normal binocular function and should be assessed for each patient.  Current clinical stereotests have limitations, especially for younger children, including not being engaging enough, requiring a fixed testing distance, being solvable monocularly, and using a single categorical staircase. This study aims to evaluate the ASTEROID stereotest, a new test developed by researchers in the UK for use on a 3D tablet at any viewing distance, for its accuracy and ease of testing. 

Methods: 47 patients, ages 3-17, at the IU School of Optometry clinic were administered the ASTEROID stereotest. Their parents then answered questions about the ease of performing the test and potential improvements. ASTEROID stereo thresholds were compared to the patients’ visual acuity and Randot stereo threshold. 

Results: 95% of patients found it easy to navigate within the test. 83% found the animations entertaining, and 75% agreed that the test had enough variation. 39 of the patients were able to complete the test. Of these, 33 patients had a Randot stereo threshold measurement in their clinical chart. A significant stereo threshold correlation was measured between ASTEROID and Randot (Spearman r = 0.476, p = 0.005). A significant correlation was also measured between ASTEROID and near visual acuity (Spearman r = -0.439, p = 0.028) in which stereo performance decreases with visual acuity. <

Conclusions: The ASTEROID stereotest solves the limitations of the Randot stereotest including keeping children engaged, being usable at any viewing distance, and utilizes the unrivaled dynamic random dot stereo display. ASTEROID is a superior test to Randot and could become the tool of choice in the clinic and clinical research. Because stereo threshold results can be affected by either poor stereovision or poor visual acuity, the ASTEROID stereotest can be used as a screening test for uncorrected refractive error or binocular vision problems.

Affiliation of Co-Authors Newcastle University, University of Madrid, Indiana University, Indiana University, Indiana University, Newcastle University