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Clinical observation has always been an important part of medical diagnosis, and an important part of this is the detection of Cyanosis which occurs when oxygen levels in the blood are dangerously depleted. 

Presenting as a bluish discolouration of the skin, the ability of medical staff to reliably detect the onset of cyanosis becomes critical to the wellbeing of patients, and appropriate lighting in hospital areas facilitates accurate detection of cyanosis in patients. 

The most suitable light source will have appropriate intensity in the red part of the visible spectrum - if the output is too low a patients skin colour may appear darker leading to a positive diagnosis or if the output is too high it may mask the cyanosis and prevent diagnosis.

For a light to be COI (Cyanosis Observation Index) compliant, it must:

  • be within the range of 3300K-5300K in CCT
  • have a COI index of <3.3 as tested against AS 1680.2.5

    corsair 2 COI  
    deep 15 COI