There is no direct correlation between working in an optical factory and thrombocytosis. There is no direct correlation between working in an optical factory and thrombocytosis. Thrombocytosis is clinically categorized as primary and secondary. 1. The cause of primary thrombocythemia is not clear. 2. The causes of secondary thrombocythemia are many, as follows: (1) Anemia or blood loss: such as iron deficiency anemia, hemolytic anemia, acute blood loss, etc. (2) Malignant tumors: such as chronic myeloid leukemia. (3) Infection: such as tuberculosis, chronic pneumonia, chronic pancreatitis, etc. (4) Surgery: e.g. splenectomy, kidney transplantation, etc. (5) Drug reaction: long-term use of certain drugs (such as vincristine, epinephrine, etc.) can also trigger thrombocytosis. Thrombocytosis may also have other causes, it is recommended to go to the hospital in time, improve the examination to clarify the cause of the disease, give targeted treatment or treatment, do not be negligent or blind decision-making, so as not to cause delays in the condition.