Logo
Login Sign Up
Current Revision

CIE 125-1997

Standard Erythema Dose, a Review
Best Price Guarantee
Instant

$45.36

2-5 Days

$45.36

SAVE 35%

$58.97


Sub Total (1 Item(s))

$ 0.00

Estimated Shipping

$ 0.00

Total (Pre-Tax)

$ 0.00


View in Library
or
...
The problem of dosimetry in skin photobiology lies in the fact that the ability of ultraviolet (UV) radiation to elicit erythema in human skin depends strongly on wavelength, encompassing a range of four orders of magnitude between 250 nm and 400 nm.-\n--\n-A CIE erythema action spectrum was proposed in 1987 but no erythemal quantity and radiometric equivalence was agreed till up to now.-\n--\n-The term minimal erythema dose (MED) has been used widely as a 'measure' of erythemal radiation. This is unreasonable because the MED is not a standard measure of anything but, on the contrary, encompasses the variable nature of individual sensitivity to ultraviolet radiation. Variables which affect the MED include optical and radiometric characteristics of the source; determinants of the exposure such as dose increment and field size; nature of the skin such as pigmentation, previous light exposure, and anatomical site; and observational factors such as definition of the end point, time of reading after exposure, and ambient illumination.-\n--\n-To avoid further confusing misuse of the term MED, we propose that this term be reserved solely for observational studies in humans and other animals, and that a new term, the standard erythema dose (SED) be used as a standardised measure of erythemogenic UV radiation. The present report proposes also its numerical value: 1 SED is equivalent to an erythemal effective radiant exposure of 100 Jm-2. Keywords: actinic radiation effects, erythemal effect, photobiology
SDO CIE: International Commission on Illumination
Document Number 125
Publication Date Jan. 1, 1997
Language en - English
Page Count 12
Revision Level
Supercedes
Committee
Loading...

Failed to load document history.

Publish Date Document Id Type View