TY - JOUR
T1 - Adjustable correlated colour temperature for surgical lighting
AU - Mundinger, J. J.
AU - Houser, K. W.
N1 - Funding Information:
The Animate Skills Laboratory at the Case Western Reserve University prepared the pig and provided medical oversight.
Funding Information:
The authors disclosed receipt of the following financial support for the research, authorship, and/or publication of this article: The experiment involving the prototype luminaire was funded by STERIS Corporation through a sponsored research agreement with The Pennsylvania State University.
Publisher Copyright:
© The Chartered Institution of Building Services Engineers 2017.
PY - 2019/4/1
Y1 - 2019/4/1
N2 - A surgical luminaire containing two types of phosphor-converted LEDs was employed to illuminate a large midline incision in a 90 kg pig. The PC-LEDs were proportionally blended to create four spectra defined by their approximate correlated colour temperatures: 3000, 4000, 4500 and 5100 K. Sixteen surgeons evaluated the colour appearance of internal anatomy under each spectrum. All four spectra were rated as highly effective. There was no significant difference between the 4000, 4500 and 5100 K spectra. The 3000 K spectrum was rated as less effective, though this does not mean it was ineffective. The spectrum by participant interaction was significant where it could be estimated, suggesting that surgeons may develop individual opinions about which spectra are most effective. While the surgeons moderately agreed that the colour of internal anatomy was altered by the different spectra, they were undecided whether the differences would increase the risk of surgical error or influence surgical decisions. They were also largely undecided whether they would select different spectra during a single procedure, for different procedures, or for different anatomy. Overall, the linear mixing for variable CCT employed in this experiment did not provide obvious utility for surgeons making visual evaluations.
AB - A surgical luminaire containing two types of phosphor-converted LEDs was employed to illuminate a large midline incision in a 90 kg pig. The PC-LEDs were proportionally blended to create four spectra defined by their approximate correlated colour temperatures: 3000, 4000, 4500 and 5100 K. Sixteen surgeons evaluated the colour appearance of internal anatomy under each spectrum. All four spectra were rated as highly effective. There was no significant difference between the 4000, 4500 and 5100 K spectra. The 3000 K spectrum was rated as less effective, though this does not mean it was ineffective. The spectrum by participant interaction was significant where it could be estimated, suggesting that surgeons may develop individual opinions about which spectra are most effective. While the surgeons moderately agreed that the colour of internal anatomy was altered by the different spectra, they were undecided whether the differences would increase the risk of surgical error or influence surgical decisions. They were also largely undecided whether they would select different spectra during a single procedure, for different procedures, or for different anatomy. Overall, the linear mixing for variable CCT employed in this experiment did not provide obvious utility for surgeons making visual evaluations.
UR - http://www.scopus.com/inward/record.url?scp=85042546055&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=85042546055&partnerID=8YFLogxK
U2 - 10.1177/1477153517742682
DO - 10.1177/1477153517742682
M3 - Article
AN - SCOPUS:85042546055
SN - 1477-1535
VL - 51
SP - 280
EP - 290
JO - Lighting Research and Technology
JF - Lighting Research and Technology
IS - 2
ER -