Some of the blurred eyes after chemotherapy for lung cancer can be recovered and some of them cannot, which mainly depends on the specific causes of blurred eyes. If the blurred eyes are caused by neurotoxicity or mucositis of chemotherapy drugs after chemotherapy, the symptoms of blurred eyes will be reduced or recovered to normal after stopping chemotherapy or treating neurotoxicity or mucositis with drugs. If chemotherapy is ineffective for lung cancer patients, and the patient’s condition progresses and brain metastasis occurs, the blurred eyes will not return to normal after stopping chemotherapy, and the blurred eyes will need to be reduced by taking radiotherapy or changing the treatment plan for lung cancer.