Applications  Healthcare
  In hospital and senior home, residents spend most of their time indoor due to illness or lack of mobilities.  Consequently their circadian rhythms are adversely affected, thus disrupting their sleep patterns.  Medical researches also indicate that people suffering from dementia and other cognitive illness are more vulnerable to inadequate exposure to daylight.

Some residents in ACC Care Center in Sacramento, California participated in a 3-month study to evaluate the circadian lighting effect on their behaviours.  The result showed that their behaviours such as yelling, agitation, and crying were reduced by an average of 41%.  Also they showed improvements in their sleep patterns.  The daily time schedule of the color temperature set inside the room is shown as below.
 
     
 
Time Color Temperature (CCT)
7:00 am 6000K Cool white
2:00 pm 4100K Neutral white
6:00 pm 2700K Warm white
 
     
 
Benefits to the residents:
1)   Maintain the circadian rhythm, especially for those needed to stay indoor most of the time.
2)   Improve the emotional and physical well-being as a result of good sleep in the previous night.
3)   Help to improve depressions.
4)   Reduce sleep-inducing medication if needed.
 
     
 
Benefits to medical staff:
1)   Help the medical staff maintain the circadian rhythm.
2)   Improve the well-being of medical staff.
3)   Lessen the workload of medical staff because the residents are less agitated and sleep more in the night time.
 
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