【摘 要】
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BACKGROUND AND OBJECTIVEVisual symptoms may develop after a concussion. Some have noted that visual dysfunction has been associated with patient reports of feeling slower than normal. This study was d
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BACKGROUND AND OBJECTIVEVisual symptoms may develop after a concussion. Some have noted that visual dysfunction has been associated with patient reports of feeling slower than normal. This study was designed to determine whether central vision reaction time (CVRT) and peripheral vision reaction time (PVRT) are prolonged among patients with post-concussive visual symptoms.
METHODSThis study included 23 patients with concussion who complained of new visual symptoms. All underwent prospective evaluations of CVRT and PVRT. A control group included 30, healthy subjects with no previous history of concussion.
RESULTSThe mean CVRT for the post-concussion group was 0.375 seconds, which was 0.063 seconds longer than that for the control group(P＝0.000). The mean PVRT for the concussion group was 0.477 seconds, 0.13 seconds longer than that for the control group (P＝0.000). The difference between CVRT and PVRT was 15.6% greater in the concussion group than in the control group (P＝0.000).
CONCLUSIONThis study of patients with concussion found that central and peripheral vision reaction times are both prolonged in patients with concussion, and that the difference between central and peripheral reaction times are significantly greater among those with concussion.
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