Abstract: Objective To understand the reality of the eye diseases,especially the lens opacity among workers exposed to microwave in electronics industry. Methods Occupational health investigation,including monitoring on workplaces and physical examination of workers,was done. Results More cases of lens opacity were found among workers exposed to microwave compared with other workers occupationally exposed to chemicals(χ²=1.53, P>0.05). It seemed that the older workers had higher morbidity of lens opacity, but there was no statistic difference among different age-groups(χ²=1.53, P>0.05). Conclusion Microwave exposure at workplace could cause workers' lens opacity at current exposure level and more attention should be given to such workers.