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作者研究了大阪的三个焊工工厂的焊工191例(男性),平均年龄41.9岁。对照组为同一城市化学和机械厂工作的214例(男性),平均年龄42.3岁。结果发现在191例焊工中有17例翼状胬肉,而对照组中仅有1例(P<0.001)。17例翼状胬肉中,双眼者2例,1眼者15例。均在角膜的鼻侧。经观察发现翼状胬肉的发病率与焊工工作历史的长短有密切的关系(r=0.975,P<0.05)。工作1～9年者发病率为5.1％,10～19年者为9.3％,20年者为10.6％。在三个工厂焊接中紫外线的辐射强度为以
The authors studied 191 welders (men) at three welder factories in Osaka with an average age of 41.9 years. The control group consisted of 214 males (men) working in the same city’s chemical and mechanical plants with an average age of 42.3 years. The results showed that in 191 of the welders there were 17 cases of pterygium, while only 1 of the control group (P <0.001). In 17 cases of pterygium, there were 2 cases of both eyes and 1 case of 15 cases. All in the nasal cornea. The observation found that the incidence of pterygium and welder working history has a close relationship (r = 0.975, P <0.05). The incidence of 1 to 9 years of work was 5.1%, 10 to 19 years was 9.3%, 20 years was 10.6%. In three factories welding UV radiation intensity to