The cavernous sinus is located on both sides of the sphenoid body. The sinus is divided into a cavernous shape by fibrous cords, so it is called the cavernous sinus. The cavernous sinus is a venous sinus that receives venous blood from the face, orbit, and nose, as well as blood from the brain and meninges, and communicates with the pterygoid venous plexus. The blood from the cavernous sinus flows into the internal jugular vein through the superior petrosal sinus and the inferior petrosal sinus. The internal carotid artery, sympathetic nerve, and abducens nerve pass through the cavernous sinus, and the oculomotor nerve, trochlear nerve, and trigeminal nerve ophthalmic branch pass through its lateral wall. Due to the above anatomical characteristics, cavernous sinus lesions mainly manifest as eye symptoms. Acute cavernous sinus thrombophlebitis is a severe suppurative inflammation of the cavernous sinus. If not treated in time, the mortality rate is extremely high. Duncan first confirmed the existence of suppurative otitis media on one side, proptosis of the eyeball, and suppurative lesions of the cavernous sinus in autopsy. Bright first described the ocular characteristics of the disease in detail.