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http://dx.doi.org/10.14401/KASMED.2021.28.1.27

A Comparison of the Effects between Eye-Mask and Light-Off Conditions on Psychiatric Patient Sleep  

Shin, Juyong (Departments of Psychiatry, National Forensic Psychiatric Hospital)
Lim, Kyoung-Ok (Departments of Psychiatry, National Forensic Psychiatric Hospital)
Cho, Seongnam (Departments of Psychiatry, National Forensic Psychiatric Hospital)
Jang, Soyeong (Departments of Psychiatry, National Forensic Psychiatric Hospital)
Cha, Seung-Min (Departments of Psychiatry, National Forensic Psychiatric Hospital)
Han, Songyi (Departments of Psychiatry, National Forensic Psychiatric Hospital)
Kim, Moojin (Departments of Psychiatry, National Forensic Psychiatric Hospital)
Publication Information
Sleep Medicine and Psychophysiology / v.28, no.1, 2021 , pp. 27-33 More about this Journal
Abstract
Objectives: The purpose of this study is to investigate the difference in the effects of eye-mask and light-off on sleep status according to a commercial fitness tracker and a sleep diary of psychiatric in-patients in correctional facilities where nocturnal light is compulsory. Methods: This study was conducted over 3 consecutive nights. In-patients of the National Forensic Psychiatric Hospital (n = 29) were assigned random subject numbers and slept as usual in the light-on condition on the first night. The subjects slept with eye-masks in the light-on condition on another night and without an eye-mask in the light-off condition on the other night. Subjects were asked to sleep wearing a commercial fitness tracker and to keep a sleep diary. The order of these changes in bedroom lighting condition on the second and third nights was assigned randomly to participants. Results: In comparison of the sleep variables between the light-on condition and the eye-mask condition, the Wakefullness After Sleep Onset (WASO) was shorter and sleep satisfaction was higher in the latter.(respectively, Z = 3.66, p < 0.017 ; Z = 2.69, p < 0.017) In comparison of the sleep variables between the light-on and light-off conditions, the WASO was shorter and sleep efficiency and sleep satisfaction were higher in the latter (respectively, Z = 2.40, p < 0.017 ; Z = 3.02, p < 0.017 ; Z = 3.88, p < 0.017). However, there were no differences in the sleep variables between the eye-mask condition and the light-off condition. Conclusion: Subjective improvements in sleep variables were noted in sleep diaries of institutionalized psychiatric patients under either the 'eye-mask' or 'light-off' condition. However, there were no significant differences between the 'eye-mask' and 'light-off' conditions. Therefore, we suggest that psychiatric patients in correctional facilities use eye-masks when sleeping.
Keywords
Bedroom lighting environment; Correctional facilities; Eye-mask; Fitness tracker; Psychiatric patients; Sleep diary;
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