Abstract: Objective To analyze the harmful effect of trinitro to luene(TNT)on workers eyes.Methods Ocular examinations including optometry,type Bultra sonic,astigmatism,and turbidity were carried out among 542 workers exposed to TNT and the results were analyzed.Results There were 90 patients diagnosed as cataract(1 patient of 3rd stage,17 of 2nd,and 72 of 1 ststage)with a total prevalence rate of 16.6% and a higher prevalence of 23.46% in the male than that of in the female(3.26%,P<0.05).Totally 343 workers were classified as the subjects to be followed up for occupational hazards with a total detection rate of 63.28% and a higher rate for the male(75.70%)than the female(39.13%) (P<0.05).The prevalence rate of cataract increased with age,TNT exposure.and working years(P<0.05).Conclusion The prevalence rate of cataract among the workers exposed to TNT was relatively high and closely related to gender,type of work,age,and working years.