title: Motor function benefits of visual restoration measured in age-related cataract and simulated patients: Case-control and clinical experimental studies.
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.
authors.affiliation: Departments of Ophthalmology, Keio University School of Medicine, Tokyo, Japan.
authors.forename: Masahiko
authors.initials: M
authors.lastname: Ayaki
authors.affiliation: Orthopedic surgery, Keio University School of Medicine, Tokyo, Japan.
authors.forename: Takeo
authors.initials: T
authors.lastname: Nagura
authors.affiliation: Orthopedic surgery, Keio University School of Medicine, Tokyo, Japan.
authors.forename: Yoshiaki
authors.initials: Y
authors.lastname: Toyama
authors.affiliation: Departments of Ophthalmology, Keio University School of Medicine, Tokyo, Japan.
authors.forename: Kazuno
authors.initials: K
authors.lastname: Negishi
authors.affiliation: Departments of Ophthalmology, Keio University School of Medicine, Tokyo, Japan.
authors.forename: Kazuo
authors.initials: K
authors.lastname: Tsubota
mesh_terms: D000328:Adult; D000368:Aged; D016022:Case-Control Studies; D002386:Cataract / Q000175:diagnosis / Q000503:physiopathology* / Q000628:therapy; D002387:Cataract Extraction; D005260:Female; D005684:Gait; D006801:Humans; D008297:Male; D008875:Middle Aged; D009043:Motor Activity; D014785:Vision, Ocular; D014792:Visual Acuity; D014794:Visual Fields