CERVO Brain Research Center, Centre Intégré Universitaire de Santé et des Services Sociaux de la Capitale Nationale, Québec, Québec, Canada (Lavigne, Dr Hébert). Département d’Ophtalmologie et d’Oto-Rhino-Laryngologie-Chirurgie Cervico-Faciale, Faculty of Medicine, Université Laval, Québec, Québec, Canada (Dr Hébert, Dr Laberge), ÉCOBES – Recherche et transfert, Cégep de Jonquière, Saguenay, Québec, Canada (Auclair, Dr Laberge), and Centre de recherche Charles-Le-Moyne, Centre intégré universitaire du Saguenay–Lac-St-Jean sur les innovations en santé, Université de Sherbrooke, Saguenay, Québec, Canada (Dr Laberge).
Address correspondence to: Luc Laberge, PhD, ÉCOBES – Recherche et transfert, 2505 rue Saint-Hubert, Cégep de Jonquière, Saguenay, Québec, Canada, G7X 7W2 ([email protected]).
Funding sources: This study was funded by the College and Community Innovation Program (CUI2I; Grant no. 472201-14) of the National Sciences and Engineering Research Council of Canada (NSERC). In addition, A-A Lavigne was funded by a master's scholarship from the Institut de recherche Robert-Sauvé en santé et en sécurité du travail (IRSST).
Conflicts of interest: None declared.
Ethical considerations and disclosure: This study was approved by the research ethics committee of the Centre de Recherche de l’Institut universitaire en santé mentale de Québec (project number: 395–2015) (Laval University, Québec, Canada). Each subject provided informed written consent and did not receive any form of compensation for his participation.
Clinical Significance: Rising levels of vigilance exhibited by underground miners during long periods of extended nighttime shifts may be further improved by judicious control of light exposure, including use of blue-blocking goggles in the morning.
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