The presence of uveitis brings more serious impact on people’s life, study and work, endangers vision, and can lead to the following complications if not checked and treated early, which may cause blindness. 1, corneal edema: this is due to inflammation involving the corneal endothelium and destroying the hydration of the cornea. Corneal band clouding, mostly seen in children with anterior uveitis, is more common in patients with chronic iridocyclitis with young rheumatoid arthritis. 2. anterior and posterior iris adhesions: in severe cases, the pupillary margin is fully posteriorly adherent, causing pupillary atresia and iris bulging, and the pupil area is covered by the mechanized membrane, forming a pupillary membrane closure. Iris bulging or mechanization of the exudate from the anterior chamber angle, which causes the root of the iris to tug on the anterior chamber angle, can cause anterior iris adhesions. All of the above conditions can cause secondary glaucoma. 3, secondary glaucoma: due to pupillary atresia, the posterior atrial aqueous cannot enter the anterior chamber through the pupil area, causing the posterior chamber pressure to rise and the IOP to rise sharply; at the same time, there can also be peri-iris anterior adhesions, blocking the atrial angle, causing the filtration function to diminish and leading to an increase in IOP; in the acute phase, the anterior chamber aqueous viscosity increases and the exudate blocks the anterior chamber angle, causing an increase in IOP. 4.Complicated cataract: Due to long-term inflammatory stimulation, it affects the nutrition and metabolism of the crystal, and causes clouding of the posterior capsule and posterior cortex. Mostly seen in chronic anterior uveitis and intermediate uveitis. 5.Vitreous clouding: In severe iridocyclitis or posterior uveitis, there is often vitreous dot, strip or mass clouding, located at the posterior part of the vitreous, floating with the rotation of the eye, which affects vision in severe cases. 6. Choroidal detachment: it is exudative and disappears as the inflammation subsides. In addition, uveitis is also prone to retinal and macular edema, degeneration, optic nerve changes, refractive error, ocular atrophy and other symptoms. Experts warn that early and proper diagnosis and treatment is the key to preventing the dangers of uveitis. Some patients need adrenal glucocorticoids, some need injections, some are better suited for surgery, while others can be treated with eye medication.