Sleep disorders are problematic for persons with dementia and their family caregivers. This randomized controlled trial with crossover evaluated the effects of an innovative blue-white light therapy on 17 pairs of home-dwelling persons with dementia and their caregivers. Subjects with dementia received blue-white light and control (‘red-yellow’ light) for six weeks separated by a four-week washout. Neither actigraphic nor most self-reported sleep measures significantly differed for subjects with dementia. For caregivers, both sleep and role strain improved. No evidence of retinal light toxicity was observed. Six weeks of modest doses of blue-white light appear to improve sleep in caregivers but not in persons with dementia. Greater or prolonged circadian stimulation may be needed to determine if light is an effective treatment for persons with dementia.

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居家光疗对痴呆症患者及其照料者的影响

睡眠障碍对痴呆症患者及其家庭照顾者来说是个问题。这项具有交叉的随机对照试验评估了一种创新的蓝白光疗法对 17 对居家痴呆症患者及其照顾者的影响。患有痴呆症的受试者接受了六周的蓝白光和对照（“红黄”光），间隔为 4 周。对于患有痴呆症的受试者，活动图和大多数自我报告的睡眠测量都没有显着差异。对于护理人员来说，睡眠和角色压力都得到了改善。没有观察到视网膜光毒性的证据。六周适度剂量的蓝白光似乎可以改善护理人员的睡眠，但不能改善痴呆症患者的睡眠。