Glaucoma is not a rare eye disease. If you have experienced blurry vision or regularly see rainbow-colored circles around bright lights, you may have it. There is an increased risk if you have diabetes or have a family history of the condition. Fortunately, glaucoma can be brought under control through laser treatment, surgery, or the use of eyedrops. The sooner you catch it, the more options you will have to bring it under control.