In recent months, Yu, a woman from Shangrao, Jiangxi, has been very distressed because she has had problems with her left eye. The swelling of the eye is getting stronger and stronger, the conjunctiva is protruding out, the eye is congested and edematous, the whole eye is swelling and pain is getting more and more obvious, and sleeping at night is already affected. The actual fact is that the eyesight of Yu’s left eye is getting worse and worse, and then almost can not even see the light. Later, Yu remembered her relative who is a doctor in Hangzhou and through her relative she found the director of the interventional vascular department of the Affiliated Hospital of Hangzhou Normal University, Zhou Bing, for consultation. After examination, Director Zhou concluded that the patient probably had a medical condition called “dural arteriovenous fistula in the cavernous sinus area”, and the diagnosis was clarified by CTA and cerebral angiography. After the procedure, the patient’s vision improved significantly, and the ocular congestion and edema slowly decreased, and he did not have trouble sleeping. Director Zhou further explained that dural arteriovenous fistula is an acquired cerebral vascular lesion, the cause of which is still not completely clear and may be related to infection, trauma, and dural sinus thrombosis. The main lesion is a communication between the internal and external carotid arteries and the cavernous sinus, resulting in increased pressure in the cavernous sinus and impaired ocular venous return, resulting in ocular distention and pain, decreased vision, and congestion and edema of the eyeball and conjunctiva. If left untreated, this can lead to loss of vision. The disease may also affect the venous return in the brain, which can produce severe headaches, seizures, and even life-threatening brain hemorrhages. These patients first visit an ophthalmologist in the early stages when only the eyeball and conjunctiva are congested. The low incidence of this disease leads many doctors not to recognize the disease and treat it as an eye disease, often with ineffective treatment or even getting worse. Therefore, Director Zhou reminds that for spontaneous ocular congestion and edema, which is ineffective after ophthalmic treatment, one must not ignore the cerebrovascular disease of dural arteriovenous fistula, which is probably the culprit of ocular redness! Interventional therapy is the treatment of choice for this disease, and most can be cured by this method.