Free surface nickel in CE-marked and non-CE-marked spectacle frames.
Three hundred and ninety-five new frames were tested for evidence of nickel release using dimethylglyoxime and ammonia. For areas of CE-marked frames in direct contact with the skin a considerable improvement was found over the previous such survey by the authors, carried out before the widespread introduction of CE marking. However, free nickel was found in 6.5% of CE-marked metal frames (excluding titanium and titanium alloy) in such areas and a majority of half joints. Some titanium alloy frames also tested positive for nickel in areas in contact with the skin.
Walsh
G
G
Department of Vision Sciences, Glasgow Caledonian University, UK. gwa@gcal.ac.uk
Mitchell
J W C
JW
D003877:Dermatitis, Contact / Q000209:etiology; D005139:Eyeglasses / Q000592:standards*; D006801:Humans; D006969:Hypersensitivity, Immediate / Q000209:etiology; D009532:Nickel / Q000032:analysis*; D014025:Titanium
D009532:Nickel; D014025:Titanium