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Motor function benefits of visual restoration measured in age-related cataract and simulated patients: Case-control and clinical experimental studies.

Ayaki M, Nagura T, Toyama Y, Negishi K, Tsubota K - Sci Rep (2015)

Bottom Line: In simulated patients, mean velocity was 87.0 ± 11.4% of normal vision with a 3° visual field and 92.4 ± 12.3% of normal when counting fingers.Initial velocity was 89.1 ± 14.6% of normal vision with a 3° visual field and 92.7 ± 11.6% of normal when counting fingers.There was a significant difference between normal and impaired visual function (P < 0.05).

View Article: PubMed Central - PubMed

Affiliation: Departments of Ophthalmology, Keio University School of Medicine, Tokyo, Japan.

ABSTRACT
The aim of the present study was to measure gait velocity in cataract and simulated patients. The study was performed on 239 cataract patients, 115 age-matched subjects, and 11 simulated patients. We measured gait velocity and analyzed gait using a three-dimensional motion analysis system. Mean gait velocity before and 2 and 7 months after cataract surgery was 0.91 ± 0.19, 1.04 ± 0.21, and 1.06 ± 0.21 m/s, respectively, for males and 0.84 ± 0.22, 0.91 ± 0.24, and 0.92 ± 0.25 m/s, respectively, for females. The increase after surgery was significant in both groups at 7 months (P < 0.05). Gait velocity was significantly slower in cataract patients compared with controls before surgery, but no longer different after surgery. In simulated patients, mean velocity was 87.0 ± 11.4% of normal vision with a 3° visual field and 92.4 ± 12.3% of normal when counting fingers. Initial velocity was 89.1 ± 14.6% of normal vision with a 3° visual field and 92.7 ± 11.6% of normal when counting fingers. There was a significant difference between normal and impaired visual function (P < 0.05). The results demonstrate the close relationship between visual function and gait in cataract patients and simulated patients.

No MeSH data available.


Related in: MedlinePlus

(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).
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f3: (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).

Mentions: Simulated patients exhibited significantly reduced gait velocity when visual function was impaired compared with normal-vision conditions (Fig. 3). Mean velocity under simulated low-vision conditions was 86.0 ± 15.1% of normal (P <0.05 vs normal vision, paired t-test) with a visual acuity of 20/600, 81.8 ± 23.6% (P < 0.05) when counting fingers, and 79.8 ± 15.4% (P < 0.01) with a visual field of 3° (P < 0.01). Initial velocity in simulated patients was 90.5 ± 8.8% of normal (P < 0.05) with a visual acuity of 20/600, 82.5 ± 13.8% (P < 0.05) when counting fingers, and 84.3 ± 9.7% (P < 0.05) with a visual field of 3° (P < 0.05).


Motor function benefits of visual restoration measured in age-related cataract and simulated patients: Case-control and clinical experimental studies.

Ayaki M, Nagura T, Toyama Y, Negishi K, Tsubota K - Sci Rep (2015)

(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).
© Copyright Policy - open-access
Related In: Results  -  Collection

License
Show All Figures
getmorefigures.php?uid=PMC4588563&req=5

f3: (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).
Mentions: Simulated patients exhibited significantly reduced gait velocity when visual function was impaired compared with normal-vision conditions (Fig. 3). Mean velocity under simulated low-vision conditions was 86.0 ± 15.1% of normal (P <0.05 vs normal vision, paired t-test) with a visual acuity of 20/600, 81.8 ± 23.6% (P < 0.05) when counting fingers, and 79.8 ± 15.4% (P < 0.01) with a visual field of 3° (P < 0.01). Initial velocity in simulated patients was 90.5 ± 8.8% of normal (P < 0.05) with a visual acuity of 20/600, 82.5 ± 13.8% (P < 0.05) when counting fingers, and 84.3 ± 9.7% (P < 0.05) with a visual field of 3° (P < 0.05).

Bottom Line: In simulated patients, mean velocity was 87.0 ± 11.4% of normal vision with a 3° visual field and 92.4 ± 12.3% of normal when counting fingers.Initial velocity was 89.1 ± 14.6% of normal vision with a 3° visual field and 92.7 ± 11.6% of normal when counting fingers.There was a significant difference between normal and impaired visual function (P < 0.05).

View Article: PubMed Central - PubMed

Affiliation: Departments of Ophthalmology, Keio University School of Medicine, Tokyo, Japan.

ABSTRACT
The aim of the present study was to measure gait velocity in cataract and simulated patients. The study was performed on 239 cataract patients, 115 age-matched subjects, and 11 simulated patients. We measured gait velocity and analyzed gait using a three-dimensional motion analysis system. Mean gait velocity before and 2 and 7 months after cataract surgery was 0.91 ± 0.19, 1.04 ± 0.21, and 1.06 ± 0.21 m/s, respectively, for males and 0.84 ± 0.22, 0.91 ± 0.24, and 0.92 ± 0.25 m/s, respectively, for females. The increase after surgery was significant in both groups at 7 months (P < 0.05). Gait velocity was significantly slower in cataract patients compared with controls before surgery, but no longer different after surgery. In simulated patients, mean velocity was 87.0 ± 11.4% of normal vision with a 3° visual field and 92.4 ± 12.3% of normal when counting fingers. Initial velocity was 89.1 ± 14.6% of normal vision with a 3° visual field and 92.7 ± 11.6% of normal when counting fingers. There was a significant difference between normal and impaired visual function (P < 0.05). The results demonstrate the close relationship between visual function and gait in cataract patients and simulated patients.

No MeSH data available.


Related in: MedlinePlus