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8 FINAL SUMMARY 8.1 Evaluation 8.1.1 Research question The aim of the thesis was to answer the following question: “How can lighting design be used as part of the treatment of severe eat- ing disorders in a 24h facility, calm the patients and still support a profes- sional work environment?” To answer the research question, a research-based lighting design concept has been proposed for PCBA ED 55. The concept is based on a lighting design with three layers of lighting and a categorisation of space, based on function and activity level. Depending on the category, the three layers will be applied within the different spaces in the facility; the approach is thus ap- plicable to other ED facilities in Denmark. The concept, including a custom circadian lighting schedule based on the current daily schedule fulfils the three success criteria in terms of healing, function and atmosphere Criteria A) Contribute to the treatment According to the design criteria, the lighting design is considered healing, when it changes dynamically over the day, to support the circadian rhythm and resets it according to natural cycles of day and night . Based on this, a customised lighting scheme for circadian rhythm stimulation, including blue peaks, has been designed. The dynamic changes in light are based on the daily schedule in PCBA ED 55, together with current knowledge on light therapy and eating disorders, which have been thoroughly researched and presented in this thesis. The concept of circadian lighting is part of the treatment, as it has been de- signed to add circadian stimuli, reset the biological clock, regulate disrupted Melatonin segregation for better sleep and body temperature rhythms. In addition, it can have a positive effect on comorbidity e.g. seasonality, de- pression, bipolar disease and anxiety. Blue light peaks will be used to boost patients and staff in the morning and early afternoon, adding energy and focus after two of the big meals. Criteria B) Improve the work environment The lighting design for the staff working environment is primarily task ori- ented with minimised disturbance glare in the entire facility. To meet the de- sign principles for function, all light follows current lighting standards, with an option to apply additional light for specialised functions. Work environ- ment and motivation will benefit from the architecture, natural surroundings and daylight intake during the day. During the evening and night shift, the lighting design is focused on warm white light, at minimum light levels, to avoid Melatonin suppression. The light is warm, but not red, as per evaluations, nurses complaining of task re- Master thesis · MSc Lighting Design · Pernille Bech-Larsen · Fall 2017 107PDF Image | Healing with light
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