EE WAS EXITING CLINKER COOLER THAT WAS BEING VENTILATED TO REMOVE DUST FROM ATMOSPHERE. EE MOVED A HOSE THAT LOOSENED A PILE OF DUST THAT WAS DRAWN INTO COOLER DOORWAY. DUST ENTERED EE'S EYES AND COULD NOT BE REMOVED WITH EYE WASH MATERIALS AT PLANT. EE WAS WEARINGF SAFETY GLASSES. DUST WAS WASHED FROM EE;S EYE BY A LOCAL OPTICIAN WHO PRESCRIVED MEDICATION TO PREVENT INFECTION.