| Evaluation of Driving Ability in Older Drivers. |
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Park, Si Woon , Choi, Eun Seok , Lim, Mun Hee , Hwang, Sung Il , Kim, Eun Joo , Choi, Kyung In , Yoo, Hyun Chul , Lee, Kuem Ju |
1Department of Rehabilitation Medicine, National Rehabilitation Center, Korea. ysj2me@naver.com
2National Rehabilitation Center Research Institute, Korea. |
| 노인 자동차 운전자들의 운전 능력 평가 |
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박시운, 최은석, 임문희, 황성일, 김은주, 최경인, 유현철, 이금주1 |
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국립재활병원 재활의학과, 1국립재활원 재활연구소 |
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| Abstract |
Objective
To assess the driving ability of older drivers, their visual function, cognitive-perceptual function, motor function and driving performance were evaluated.
Method
Subjects were 55 drivers aged 65 years or older. Visual function test included visual acuity, visual field, color vision and contrast sensitivity. Cognitive perceptual function was evaluated with the cognitive perceptual assessment for driving (CPAD) and clock drawing test. For motor function, muscle strength and range of motion were evaluated. Driving performance was evaluated by virtual reality based driving simulator. For comparision, 48 younger drivers aged between late twenties and early forties underwent the same evaluation.
Results
Among older drivers, 21 (38.2%) had visual acuity less than 20/40, 3 (5.5%) had visual field narrower than 140o bilaterally. Contrast sensitivity was significantly decreased in both day and night with glare light conditions. In cognitive- perceptual function assessment, 20 subjects (36.4%) passed CPAD test, 3 subjects (5.5%) failed, and 32 subjects (58.1%) fell into borderline group. Mean CPAD score was 50.65± 5.62, which was significantly lower than that of younger drivers. 18 subjects (32.7%) were incorrect in clock drawing test. In motor function assessment, 4 subjects (7.3%) in older drivers showed hemiparesis secondary to stroke. In driving simulator, 21 subjects (38.2%) failed whereas only 4 subjects (8.3%) did in younger drivers. Average demerit score was 24.09±15.53 and was significantly higher than that of younger drivers.
Conclusion
Older drivers showed significantly higher incidence of visual and cognitive-perceptual dysfunction, and poorer driving performance compared to younger drivers group. (J Korean Acad Rehab Med 2010; 34: 458-464) |
| Key Words:
Automobile driving, Cognition, Perception, Geriatric assessment |
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