Glaucoma cannot currently be prevented, nor can vision already lost to glaucoma be restored. If diagnosed and treated early, glaucoma can usually be controlled, but you will need to continue treatment for the rest of your life.
The earlier you are diagnosed and begin treatment, the less your vision is likely to suffer the ill effects of glaucoma.
Treatment for glaucoma may include one or more of any number of medications that are available, typically designed to reduce elevated pressure in your eye. More than one medication may be prescribed, and the type may be changed if pressure is not reducing enough or you are experiencing side effects.
In some cases, especially in advanced stages of the disease, and for the acute-angle form, surgery may be indicated. Your optometrist will be able to determine this during your exam, and recommend a specialist for one of several procedures available to reduce the suffering and further vision loss glaucoma can cause.