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Free surface nickel in CE-marked and non-CE-marked spectacle frames
Article first published online: 6 MAR 2002
DOI: 10.1046/j.1475-1313.2002.00018.x
1475-1313/asset/cover.gif?v=1&s=00595b8fc7bc72d11739ce2ee476f3ad0e3fefc6 "Ophthalmic and Physiological Optics")
Additional Information
How to Cite
Walsh, G. and Mitchell, J. W. C. (2002), Free surface nickel in CE-marked and non-CE-marked spectacle frames. Ophthalmic and Physiological Optics, 22: 166–171. doi: 10.1046/j.1475-1313.2002.00018.x
Publication History
- Issue published online: 6 MAR 2002
- Article first published online: 6 MAR 2002
- Abstract
- Article
- References
- Cited By
Keywords:
- allergy;
- dimethylglyoxime (DMG) test;
- free surface nickel;
- 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.