Prior to the 1990s, the surgical approach for chronic lacrimal sacculitis, certain intraorbital foreign bodies and tumors, traumatic optic neuropathy, severe retrobulbar optic neuritis, and malignant proptosis (Grave,s disease) was performed through a transfacial incision. The disadvantages of this surgical approach are the distance from the disease site, trauma, long recovery period and postoperative facial scarring. Endoscopic nasal-eye related surgery is a new surgical technique established in the 1990s. This new technique is a surgical technique based on a minimally invasive nasal endoscopic surgical technique with a transnasal sinus approach to perform orbital disease surgery. The most important advancement of this technique is that the otorhinolaryngology head and neck surgeon has created a transnasal sinus approach to the orbit and the optic nerve canal, taking advantage of the familiarity with the anatomy of the nasal sinus, which is only one plate away from the orbit. Therefore, endoscopic nasal-eye related surgery is a new technique with the shortest approach, minimal injury, minimal pain, short recovery period, no facial scars, and the same efficacy as the traditional surgical approach, but endoscopic nasal-eye related surgery is more difficult and risky. After more than 10 years of clinical practice, endoscopic nasal eye-related surgery has been endorsed by the ophthalmology community and ophthalmologists. Endoscopic nasal eye-related surgery includes five procedures: transnasal endoscopic optic nerve decompression, transnasal endoscopic tear sac nasal opening, transnasal endoscopic orbital foreign body removal, transnasal endoscopic orbital tumor resection, and transnasal endoscopic orbital decompression. 1. Traumatic optic neuropathy: This disease is caused after head trauma, and the clinical manifestation is sudden loss of vision or blindness. The vast majority of them are caused by inadvertent car accidental impact on the head (mostly motorcycle riding). After a violent impact on the head, the sinus bone is often fractured and the optic nerve is located right next to the sinus and is damaged, usually because the fractured bone fragment compresses the optic nerve or the optic nerve is strained and edematous at the same time, leading to vision loss or blindness. Therefore, a transnasal endoscopic optic nerve decompression is required. Optic nerve injury requires emergency surgery, and it is better to receive surgery within 7 days after the injury, and worse after more than 10 days. 2. Chronic lacrimal sacculitis: it is a common disease in ophthalmology. Traditional surgery requires an incision on the inner side of the eye on the face, which is more damaging and can easily leave facial scars after surgery. Using transnasal endoscopic lacrimal sac nasal opening, facial incision can be avoided and surgery can be performed under the guidance of nasal endoscope to achieve fine and accurate results with reliable curative effect. 3.Severe retrobulbar optic neuritis: retrobulbar optic neuritis is an inflammation of the optic nerve caused by pus accumulation in the sinuses, huge sinus cysts, or unknown causes, resulting in vision loss and severe blindness. Severe retrobulbar optic neuritis can be treated with transnasal endoscopic optic nerve decompression to save vision. 4. Intraorbital foreign bodies and intraorbital tumors: Intraorbital foreign bodies are external objects that enter the orbit for various reasons, mostly due to accidental gunshot wounds. Intraorbital tumors are benign tumors that originate in the orbit. Traditional surgical treatment of benign intraorbital tumors requires incisions around the eyes of the face, which can cause significant surgical damage and leave facial ectopic scars after surgery. Transnasal endoscopic orbital foreign body removal and transnasal endoscopic orbital tumor resection avoid facial incisions and are performed under nasal endoscopic guidance, resulting in fine, accurate, and less complications. However, this surgical approach is not possible in all cases. Only cases where the foreign body or tumor is located inside the optic nerve and close to the sinus are suitable to choose this surgical approach. 5. Malignant proptosis: Also known as Grave,s disease, it is a severe protrusion of the eye in combination with toxic goiter. Due to the severe protrusion of the eye, the eye cannot be closed, which exposes the cornea to the air for a long time and eventually leads to blindness due to dry necrosis of the cornea. Orbital decompression surgery can be performed to bring the eye back if internal treatment is ineffective or ineffective. Traditional surgery requires an incision around the eye on the face, whereas transnasal endoscopic orbital decompression can avoid a facial incision, leave no postoperative facial scars, and is less invasive. The procedure is more precise, accurate, and has a lower complication rate.