<prompt> A 40 YR OLD MAN , WORKING IN FARM PRESENTED WITH HEADACHE MALASIE SENSE OF TIGHTNESS DIMNESS OF VISION . ON EXAMINATION PUPILS WERE SHOWN AS BELOW ? WHAT IS TH EDIAGNOSIS ?LEAD POISONINGORGANO PHOSPHOROUSNICKLE POISONINGCOCIANE  <response>: REF : NARAYANA REDDY 