With the widespread use of cell phones, iPads and other electronic products, vision loss has become a common health problem. In the past six months, Ms. Wang felt that her vision in her right eye had decreased significantly, and at first she thought it was the deepening of myopia, but after coming to Ruijin Hospital for examination, she found that it was actually a tumor in the pituitary gland of the brain! The “culprit” of her vision loss was a 2 cm diameter pituitary adenoma located in the saddle area of the brain. The neurosurgery team of the hospital carefully analyzed and discussed the tumor, and the chief of the department, Prof. Zhao Weiguo, decided to use the neuroendoscopic technique with less trauma and bleeding to remove the tumor after summarizing the opinions of everyone. On the day of surgery, Dr. Wu Zhebao, chief of neurosurgery department, inserted an endoscope with an outer diameter as thick as a chopstick through Ms. Wang’s right nostril and reached the surgery area through the nasal passage, and removed the pituitary adenoma through a clear endoscopic display system. After the surgery, Ms. Wang’s vision in her right eye improved significantly and there were no other residual complications, and she was discharged from the hospital after one week. As a new minimally invasive technique in neurosurgery, the outside diameter of the endoscope is equivalent to the thickness of chopsticks, and the head end has a light source. As a new minimally invasive technique in neurosurgery, the outside diameter of the endoscope is equivalent to the thickness of a chopstick and the head end has a light source, so not only is the operation flexible, but also the surgical field of view is large, which expands the exposure of the lesion and makes the removal of the tumor more intuitive and safer, but also reduces the trauma of previous open-head surgery. “It is like a chopstick with a light source sticking into the nasal cavity and clamping out the tumor.” Dr. Wu metaphorically said about this. This minimally invasive technique is less traumatic, less bleeding, shorter hospital stay and less expensive. For patients, they also feel more comfortable and recover faster because the nasal cavity does not need to be filled after endoscopic surgery. It is reported that at present, this technique is mainly used to remove pituitary tumors, but it can also be used to remove and treat other lesions in the saddle area and anterior skull base such as meningioma, craniopharyngioma, chordoma, as well as obstructive hydrocephalus, intracranial cystic lesions, cerebrospinal fluid nasal leakage, and optic nerve entrapment syndrome. At present, our neurosurgery department has opened a special clinic for neuroendoscopic techniques on Wednesday mornings.Ps: Pituitary adenoma is a common benign tumor with an annual incidence of 7.5-15 per 100,000 people. Clinical manifestations of pituitary adenoma mainly include symptoms such as thick fingers, menopause and lactation, centripetal obesity due to abnormal increase in hormone secretion, and decreased pituitary function such as decreased sexual function, weakness and decreased appetite due to tumor compression. Especially noteworthy is that when the pituitary tumor occupying effect compresses the optic nerve region, the patient presents with decreased vision, visual field defects and headache. That is why it is important not to forget to have a brain MRI when vision loss occurs.