Neovascular glaucoma is a serious form of glaucoma that can cause blindness. It is caused by abnormal growth of blood vessels in the eye, leading to increased pressure in the eye. Other terms used to describe neovascular glaucoma include rubeotic glaucoma and angiogenic glaucoma. While these terms are not interchangeable, they are often used to describe the same condition. Rubeotic glaucoma refers specifically to neovascular glaucoma caused by diabetes, while angiogenic glaucoma refers more broadly to any type of neovascularization in the eye that leads to glaucoma. Regardless of the term used, neovascular glaucoma requires urgent medical attention to prevent permanent vision loss.