Scleral venous sinus is an ophthalmologic anatomical name for a circular duct in the deep scleral parenchyma where the sclera meets the cornea and where the aqueous humor collects and eventually converges into the ocular vein; this circular duct is called the scleral venous sinus. Disease or obstruction of the scleral venous sinus can lead to increased intraocular pressure and even glaucoma. 1. The atrial fluid and atrial fluid circulation have the function of maintaining intraocular pressure, and providing nutrients to the sclera, iris, lens and other eye tissues and discharging metabolites. 2. The trabecular meshwork channel of the aqueous humor circulation accounts for 70% of the aqueous humor circulation: the ciliary body produces aqueous humor → the posterior chamber of the eye → the pupil → the anterior chamber of the eye → the trabecular meshwork → the sinus of the scleral vein → the collecting ducts and aqueous humor veins in the sclera → the scleral surface of the anterior ciliary vein. 3. Lesions or obstruction of the scleral venous sinus can lead to increased intraocular pressure, which, if poorly controlled, can lead to glaucoma. Glaucoma is a common disease that can lead to blindness and requires treatment or even surgery. If the scleral venous sinus is diseased or blocked, it is recommended to go to the ophthalmology department of the hospital for further treatment.