Description of Sleep Disturbances among Persons Who Are Visually Impaired: Survey of Dog Guide Users
Abstract: It is claimed that blindness may predispose individuals to disturbed sleep because light is an important mechanism for entraining circadian rhythms. One in five respondents in a survey described the quality of their sleep as either poor or very poor. Exercise was associated with better sleep, and depression with poorer sleep. That visual acuity did not predict the quality of sleep casts doubt on the notion that restricted visual (photic) input is a widespread cause of sleep disturbance among persons who are visually impaired. As with sighted persons, depression appears to be a highly significant risk factor for disturbed sleep in persons who are visually impaired.