@anon50371- I took care of an elderly woman who suffered from glaucoma. Her symptoms included losing her peripheral vision and having blind spots in her line of sight. From a more general medical standpoint, the symptoms vary depending on the type of glaucoma. Effects, or symptoms, commonly include loss of vision, blurred vision, and sometimes pain from what I know.
If you are concerned about glaucoma eye disease and how it could affect you, I would say you should call your optometrist. He or she would be able to answer your questions in greater detail. There are also some medical resources on the internet that may be able to give you more information on the effects of the disease.