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. 2015 Sep 30;5:14595. doi: 10.1038/srep14595

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Copyright © 2015, Macmillan Publishers Limited

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(a) Initial velocity (mean velocity during the first 0.1 s of the first step) and (b) mean velocity in subjects in whom low visual function was simulated by reducing visual acuity to 20/600 and counting fingers, and reducing the visual field to 3°. Note that gait velocity was correlated with visual function. There was a significant difference between values obtained under normal vision conditions (visual acuity > 20/15) and each simulated low-vision condition (*P < 0.05, paired t-test).