Pathogenesis and treatment of neovascular glaucoma

Neovascular glaucoma is classified as a type of refractory glaucoma. Its pathological manifestation is the formation of neovascularization of iris and chamber angle, and then the formation of neovascularization membrane. The contraction and traction of neovascularization membrane make the iris and chamber angle adhesion close, which leads to the obstruction of aqueous humor outflow and the sharp increase of intraocular pressure. Excessive intraocular pressure not only causes severe headache and eye pain, but also damages the optic nerve and affects the patient's vision, which can lead to blindness. At present, there are many methods for the treatment of neovascular glaucoma, such as panretinal photocoagulation, anti-vascular endothelial growth factor, local or systemic administration of intraocular pressure lowering drugs and anti-glaucoma surgery. The aim is to reduce neovascularization, preserve visual function and improve symptoms as much as feasible. However, due to the complex pathogenesis and pathological changes of neovascular glaucoma, the treatment of neovascular glaucoma is more difficult than primary glaucoma, and the prognosis is worse. Understanding its pathogenesis and treatment methods can aid in selecting the most appropriate treatment strategy based on individual circumstances. Therefore, this review will summarize the pathogenesis and treatment of neovascular glaucoma.