[Study on the relationship between the opacity of lens and the levels of 2, 6-dinitro-4-amino-toluene (DNAT) in the urine of workers exposed to trinitrotoluene(TNT)].

Objective: To find out the relationship between the opacity in lens and the contents of 2,6-dinitro-4-amino-toluene(DNAT) in the urine of exposed workers.

Methods: Testing the exposed worker's lens and measuring the contents of DNAT in the urine after work.

Results: When the opacity of the lens occurred, the contents of DNAT in the urine(2.