Visual changes
Common visual disorders in elderly such as presbyopia, glaucoma or cataracts usually impact visions such as visual acuity, dark adaptation, contrast sensitivity and depth perception. These changes affect postural stability, and increase risk of falls due to misjudgment of distance and spatial information. Evidence supported that degrees of the body sway increased between 20 to 70 percents during standing with eye closed. However, the degrees of body sway also depend on the age of subjects. A study indicated that the visual function becomes dramatically worse after the age of 50 years. reported that approximately 30 percents of elderly showed postural sway during standing with eye closed. Thus, an accurate and clear vision is very important for interpretation movement directions and ability to safely move in the environment.
Visual changesCommon visual disorders in elderly such as presbyopia, glaucoma or cataracts usually impact visions such as visual acuity, dark adaptation, contrast sensitivity and depth perception. These changes affect postural stability, and increase risk of falls due to misjudgment of distance and spatial information. Evidence supported that degrees of the body sway increased between 20 to 70 percents during standing with eye closed. However, the degrees of body sway also depend on the age of subjects. A study indicated that the visual function becomes dramatically worse after the age of 50 years. reported that approximately 30 percents of elderly showed postural sway during standing with eye closed. Thus, an accurate and clear vision is very important for interpretation movement directions and ability to safely move in the environment.
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