Department of Biomedical Engineering, University of Linköping, Sweden.
Scand J Work Environ Health. 1979 Sep;5(3):271-9. doi: 10.5271/sjweh.3101.
Because of reports of risks associated with the use of contact lenses during exposure to welding arcs, the temperature changes in soft contact lenses were recorded in connection with certain types of welding [manual metal arc (MMA) welding, tungsten inert-gas (TIG) welding, and metal inert-gas (MIG) welding], both with free-hanging lenses and lenses applied to the eyes of anesthetized rabbits. A great increase in temperature was noted, especially with MMA welding. At a distance of 0.4 m the temperature of a lens on a rabbit eye rose from about 35 to 50 degrees C within 6 min, whereas the air temperature only increased from 23 to 30 degrees C. The increase was the greatest at the beginning of the welding period. Most of the lenses completely dried out during the experiment, and there would seem to be a potential risk that the lens would adhere to the cornea. One safety glass screen (DIN 10 A) proved effective in preventing the rise in temperature in contact lenses during MMA welding. Even though it is impossible to direct the eyes at the arc for a prolonged period of time, the use of contact lenses in connection with at least certain types of welding is not to be recommended without the use of a suitable safety glass screen (or safety glasses). With regard to the large number of particles in the welding environment, also a risk factor for contact lens wearers, it is doubtful whether even safety glasses or screens are satisfactory unless they fit closely.
由于有报道称在接触焊接电弧时使用隐形眼镜存在风险，因此记录了软隐形眼镜在某些类型的焊接（手动金属电弧 (MMA) 焊接、钨极惰性气体 (TIG) 焊接和金属惰性气体 (MIG) 焊接）中的温度变化，包括悬空镜片和应用于麻醉兔子眼睛的镜片。温度升高幅度很大，尤其是在 MMA 焊接时。在距离 0.4 米处，兔子眼睛上的镜片温度在 6 分钟内从约 35 度上升到 50 度，而空气温度仅从 23 度上升到 30 度。焊接开始时温度上升最大。在实验过程中，大多数镜片完全干燥，镜片似乎有可能粘在角膜上。一个安全玻璃屏幕（DIN 10 A）被证明在 MMA 焊接过程中有效防止隐形眼镜温度升高。即使不可能长时间直视电弧，在使用合适的安全玻璃屏幕（或安全眼镜）的情况下，不建议在至少某些类型的焊接中使用隐形眼镜。考虑到焊接环境中的大量颗粒也是隐形眼镜佩戴者的一个风险因素，除非安全眼镜或屏幕紧密贴合，否则它们是否令人满意值得怀疑。
