In the clinical work of neurosurgery, we often encounter patients with vision loss caused by intracranial saddle area tumors. These patients are often not taken seriously in the early stage of the disease, delaying the early diagnosis, and often wait until more serious symptoms such as headache or even coma appear before seeking medical attention. Some of them think they are aging because they are old and their vision has just started to decline; some of them have myopia and think they have deepened myopia; some of them go to the hospital, but they are delayed because they do not find any abnormality in the eye examination; some of them even do cranial CT, but they do not do MRI because the lesion is small and delay the diagnosis. The common tumors in the saddle area are pituitary tumor and meningioma. For unexplained vision loss, you should go to the hospital in time. If the ophthalmology consultation does not improve or the cause is not clear, you should routinely perform cranial magnetic resonance examination of the saddle area. The most important feature of vision loss caused by saddle area tumor is: vision loss cannot be corrected by wearing myopic or aging glasses! And there will be visual field defects (self-examination method is to cover one eye, you will find that the outer side of the other eye can not be seen, and the side near the nose can be seen. Men can also have decreased sexual function, such as impotence, etc.) The 60-year-old male patient below is the one who has had blurred vision for the past six months, which was not taken seriously until he had a headache close to coma before he was examined and was found to have a huge pituitary tumor in the saddle area, at which point the surgery was traumatic and extremely risky. If detected early, he could have undergone a less invasive transnasal surgery to remove the tumor. This patient had to undergo a skull-opening surgery due to the huge tumor, which was very risky. Fortunately, this patient survived the surgery and other difficulties smoothly and is recovering well. In the first month after surgery, the patient urinated a little more and did not need to take medication to prevent urinary collapse, and took oral prednisone and eugenol as replacement therapy.