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KMID : 1011420170220020127
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Journal of Korean Ophthalmic Optics Society
2017 Volume.22 No. 2 p.127 ~ p.132
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Comparison of Dynamic Stereoacuity According to Monocular Cue
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Shim Hyun-Suk
Kim Sang-Hyun
Kim Young-Cheong
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Abstract
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Purpose: This study was to compare between the dynamic stereoacuity (DS) with and without monocular cue using two-rods test, and to investigate the relationship between amount of pupil distance (PD), anisometropia and DS.
Methods: For subjects, 126 adults (male 70, female 56, mean age of 21.11±2.22 years old) were measured the DS when including monocular cue with naked eye and excluding monocular cue separated with polarized glasses. The test was performed three times at 2.5 m for each.
Results: The mean of DS with monocular cue was 28.55±22.04 arc sec for total subjects, 27.74±20.51 arc sec for male, 29.58±23.97 arc sec for female, and the mean of DS without monocular cue was 145.02±8057 arc sec for total subjects, 140.02±76.52 arc sec for male, 142.60±78.08 arc sec for female. The mean difference between the two DS with and without monocular cue was 114.04±77.67 arc sec, and the two stereoacuity was statistically significantly different (p<0.05) but not correlated. In addition, DS without monocular cues was slightly more correlated to DS with anisometropia than DS by amount change of PD (r = 0.23).
Conclusions: The dynamic stereoacuity showed a significant difference depending on the presence or absence of a monocular cue, and the difference between the two stereoacuiity value was not constant, and the deviation was large. So both the examination excluded the monocular cue, which removed some fusion with polarized glasses, and examination included the monocular cue with the naked eye are necessary. The more important stereo test is a test of monocular cue included.
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KEYWORD
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Two-rods test, Monocular cue, Dynamic stereoacuity, Anisometropia, PD
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