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T. Handa, H. Uozato, K. Mukuno, T. Niida, N. Shoji, K. Shimizu; The Effects of Dominant and Nondominant Eye in Binocular Rivalry . Invest. Ophthalmol. Vis. Sci. 2003;44(13):2777.
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© ARVO (1962-2015); The Authors (2016-present)
Purpose: To elucidate the characteristic feature in binocular rivalry with regard to ocular dominance. Methods: The feature of dominant and nondominant eye in binocular rivalry was measured in 14 subjects. In study 1 using rectangle gratings of 1, 2, 4 c/deg in 2, 4, 8 deg, target intensity in one eye varied as decreasing contrast intensity or adding ±spherical lenses, when target intensity of other eye fixed at highest intensity. In study 2 using rectangle grating of 2c/deg in 4deg, target intensity in dominant eye varied with decreasing contrast or adding ±spherical lenses, when target intensity of nondominant eye fixed at highest intensity. These features are elucidated as a total time of exclusive visible. Results: In study1, nondominant eye showed a remarkably inverted V-shaped feature of exclusive visibles as decreasing contrast and adding +spherical lenses in nondominant eye. A significant difference between lower intensity (60% and +1.5D) and highest intensity (99% and 0D) was found in 2c/deg (p<0.05). In study 2, the reverses of exclusive visible in nondominant eye were found in all contrast or spherical lens conditions except for 99% and 0, +0.5D. Most subjects showed the reverse at 60% and +1.5D. Conclusions: The features in dominant and nondominant eye were significant, especially a characteristic preference in lower intensity of 2c/deg in nondominant eye, and strongly supports the existence of eye rivalry in binocular rivalry. Our new balance technique of binocular rivalry can easily grasp feature of ocular dominance. Support: Ministry of Education, Science, Sports, and Culture of Japan (No 11835036)
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