Why does Health Canada not use the erythema action spectrum modified by the FDA?
A17. Health Canada has decided to use the internationally accepted Erythema Reference Action Spectrum (EAS) defined by CIE and used by IEC. This spectrum is only marginally different from the EAS modified by FDA. Current indications are that FDA are going to use the CIE spectrum in the near future. It should be obvious that this new approach was proposed to help the user avoid unnecessary exposure. Amendment 4 A maximum recommended yearly dose is added to the regulation and it reads as follow: “A recommended number of exposures per year based on a maximum dose of 15 kJ/m2, weighted in accordance with the erythema reference action spectrum and taking into account the recommended exposure schedule.” Q18. Why has Health Canada decided to introduce a maximum recommended annual dose in the proposed amendments? A18. The maximum recommended yearly dose of 15 kJ/m2 (weighted according to the EAS) instead of 25 kJ/m2 (weighted according to the NMSC) is going to apply when the manufacturer calcu
