Evaluation of aniseikonia with an auto-stereoscopic smartphone

Lingzhi Zhao, Huang Wu


Background: An auto-stereoscopic smartphone can produce 3D images without the need for the viewer to wear glasses. The purpose of this study was to evaluate whether this technology could be utilized to measure aniseikonia.
Methods: A 2K auto-stereoscopic smartphone was used to imitate the Awaya new aniseikonia test. In test 1, four pairs of lenses combined with a trial frame were used to create 4 different magnification rates in 10 subjects. In test 2, 40 subjects whose anisometropia was higher than 2.00D were recruited.
Results: No significant difference between the results of the Awaya new aniseikonia test and auto-stereoscopic smartphone test (Wilcoxon signed-rank test: test 1, P=0.85; test 2, P=0.53). Bland-Altman plots showed that the difference between the two tests was ≤1% in both tests 1 and 2.
Conclusions: An auto-stereoscopic smartphone can be an effective tool for evaluating aniseikonia.