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. 2014 Nov;55(6):1672-7.
doi: 10.3349/ymj.2014.55.6.1672.

Real stereopsis test using a three-dimensional display with Tridef software

Affiliations

Real stereopsis test using a three-dimensional display with Tridef software

Jinu Han et al. Yonsei Med J. 2014 Nov.

Abstract

Purpose: To investigate horizontal image disparity in three-dimensional (3-D) perception using 3-D animations in normal control patients and patients with intermittent exotropia, anisometropic amblyopia, and partially accommodative esotropia.

Materials and methods: A total of 133 subjects were included. Stereopsis was measured using the Titmus Stereo test (Stereo Optical Inc., Chicago, IL, USA) and a 3-D stereopsis test with a 15 inch 3-D display laptop, adjusting 3-D parameters of 0 mm horizontal disparity to 15 mm horizontal disparity.

Results: When compared with normal controls, the average threshold of the 3-D stereopsis test was significantly reduced for esotropia patients (p<0.001) and for anisometric amblyopia patients (p<0.001), compared to normal controls. No significant difference was observed between normal controls and intermittent exotropia patients (p=0.082). The 3-D stereopsis test was correlated with the Titmus Stereo test (Spearman's rho=0.690, p<0.001). Mean difference in stereoacuity was 1.323 log seconds of arc (95% limits of agreement: 0.486 to 2.112), and 125 (92.5%) patients were within the limits of agreement.

Conclusion: This study demonstrated that a 3-D stereopsis test with animation is highly correlated with the Titmus Stereo test; nevertheless, 3-D stereopsis with animations generates more image disparities than the conventional Titmus Stereo test. The 3-D stereopsis test is highly predictive for estimating real stereopsis in a 3-D movie theater.

Keywords: Depth perceptions; imaging; three dimensional; vision disparity.

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Conflict of interest statement

The authors have no financial conflicts of interest.

Figures

Fig. 1
Fig. 1
(A) Subject watches the 3-dimensional (3-D) movie displayed by a 15 inch 3-D laptop computer. (B) The video clip was converted into a 3-D movie by a TriDef 3-D media player.
Fig. 2
Fig. 2
Box plot illustrating the results of the Titmus Stereo and three-dimensional (3-D) stereopsis tests for each group of patients. *Statistical significance compared to normal controls. arcsec, seconds of arc.
Fig. 3
Fig. 3
Scatter plot showing the association between the Titmus Stereo and three-dimensional (3-D) stereopsis tests (Spearman's rho=0.690, p<0.001). arcsec, seconds of arc.
Fig. 4
Fig. 4
Bland-Altman plot showing differences between the three-dimensional (3-D) stereopsis and Titmus Stereo tests for 133 subjects. Gray area shows 95% limits of agreement with 95% confidence intervals. Mean difference between the 3-D stereopsis and Titmus tests was 1.323 log arcsec. arcsec, seconds of arc.

References

    1. Wardle SG, Gillam BJ. Phantom surfaces in da Vinci stereopsis. J Vis. 2013;13:16. - PubMed
    1. Wallace DK, Lazar EL, Melia M, Birch EE, Holmes JM, Hopkins KB, et al. Stereoacuity in children with anisometropic amblyopia. J AAPOS. 2011;15:455–461. - PMC - PubMed
    1. O'Connor AR, Fawcett SI, Stager DR, Birch EE. Factors influencing sensory outcome following surgical correction of infantile esotropia. Am Orthopt J. 2002;52:69–74. - PubMed
    1. Lee SY, Isenberg SJ. The relationship between stereopsis and visual acuity after occlusion therapy for amblyopia. Ophthalmology. 2003;110:2088–2092. - PubMed
    1. Adams WE, Leske DA, Hatt SR, Mohney BG, Birch EE, Weakley DR, Jr, et al. Improvement in distance stereoacuity following surgery for intermittent exotropia. J AAPOS. 2008;12:141–144. - PMC - PubMed