THE EFFECTIVENESS OF POLY(ALLYL DIGLYCOL CARBONATE) (CR‐39) FOR LOW‐DOSE SOLAR ULTRAVIOLET DOSIMETRY
1994; Wiley; Volume: 59; Issue: 1 Linguagem: Inglês
10.1111/j.1751-1097.1994.tb00001.x
ISSN1751-1097
AutoresMichael M. Sydenham, Michael J. Collins, Lawrence W. Hirst,
Tópico(s)Ocular and Laser Science Research
ResumoThe suitability of CR‐39 (poly[allyl diglycol carbonate]) for low‐dose solar UV ocular dosimetry was investigated and compared with polysulfone film. The CR‐39 was sourced from two suppliers and cut into individual dosimeters and contact lenses. All CR‐39 and polysulfone dosimeters were exposed to sunlight (0‐9 minimal erythemal dose). After exposure, CR‐39 dosimeters were etched in 6 M and 8 M KOH (potassium hydroxide) at 80°C to reveal UV‐induced front surface opacities that were quantified by spectrophotometric transmittance measurements at 400 nm and 720 nm. Post‐exposed polysulfone dosimeters were analyzed for change in absorbance by spectrophotometry at 330 nm. The CR‐39, in the form of individual dosimeters and as contact lenses, was not capable of accurate dose assessment for the dose range considered. On the other hand, polysulfone was found to be a reliable dosimeter over the same dose range.
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