Examination of distant stereosis using 3D Visual Function Trainer in normal subjects

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  • Hiraki Yoko
    Department of Ophthalmology, Kawasaki Medical School
  • Goto Katsutoshi
    Department of Ophthalmology, Kawasaki Medical School Doctoral Program in Sensory Science, Graduate School of Health Science and Technology, Kawasaki University of Medical Welfare
  • Oka Mayumi
    Department of Ophthalmology, Kawasaki Medical School Doctoral Program in Sensory Science, Graduate School of Health Science and Technology, Kawasaki University of Medical Welfare Department of Sensory Science, Faculty of Health Science and Technology, Kawasaki University of Medical Welfare
  • Yamashita Tsutomu
    Department of Ophthalmology, Kawasaki Medical School Department of Sensory Science, Faculty of Health Science and Technology, Kawasaki University of Medical Welfare
  • Takasaki Hiroko
    Department of Ophthalmology, Kawasaki Medical School Doctoral Program in Sensory Science, Graduate School of Health Science and Technology, Kawasaki University of Medical Welfare Department of Sensory Science, Faculty of Health Science and Technology, Kawasaki University of Medical Welfare
  • Haruishi Kazuko
    Department of Ophthalmology, Kawasaki Medical School
  • Miki Atsushi
    Department of Ophthalmology, Kawasaki Medical School Doctoral Program in Sensory Science, Graduate School of Health Science and Technology, Kawasaki University of Medical Welfare Department of Sensory Science, Faculty of Health Science and Technology, Kawasaki University of Medical Welfare
  • Kiryu Junichi
    Department of Ophthalmology, Kawasaki Medical School

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  • 3D Visual Function Trainerを用いた健常人における遠見立体視の検討

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<p>[Purpose] 3D visual function trainer (ORTe) is capable of testing stereopsis quantitatively under the condition of daily viewing using 3D monitor and circularly polarizing glasses. In the present study, we investigated an association between the distance stereopsis using ORTe and near stereopsis using Titmus Stereo Test (TST) in normal subjects.</p><p>[Subjects and Methods] Forty-seven normal subjects without strabismus were enrolled. Their average age was 21.6±2.4 years, corrected visual acuity was more than 1.0, disparity of refractive power between the eyes was less than 2D, and deviation of heterophobia was -2.7±3.2⊿. Near stereotest was evaluated by the value of crossed disparity (convex table) and uncrossed disparity (concave table) using TST circle target. Distance stereotest was obtained the value of convex table and concave table using circle and picture targets of ORTe.</p><p>[Results] Median values of convex concave tables in TST were 40 seconds. The percent of the subjects with less than 60 seconds was 91% in convex table and 94% in concave table. Median value of all targets in ORTe was 30 seconds; less than 60 seconds was 88% in convex table, 78% in concave table (circle target), 70% in convex table, and 71% in concave table (picture target). There was no difference between circle and picture targets.</p><p>[Conclusion] Distance stereopsis using ORTe and near stereopsis using TST in normal subjects were found to be comparable.</p>

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