I see this is an old thread but there's a fair bit of misinformation in it. I'm posting to hopefully clear up a few things. This is my industry.
Glaucoma has a strong family history. If you have it, someone in your immediate family has a much higher risk, so it's important that EVERYONE get tested.
Glaucoma is a blanket diagnosis for a couple of conditions, so there are different forms. As such, you can have high OR normal eye pressure, and have glaucoma - you just have different types. All glaucoma - even early stage - requires treatment. Treatment is almost always drops, and some Optometrists can prescribe these, and some can't, depending on their qualifications and the licensing in your state (although that's becoming nationalised). Glasses do NOT treat Glaucoma. Once you have a diagnosis of Glaucoma you will need review AT LEAST every 12 months, and it is more likely to be every three months or more often until you're stable.
Having Glaucoma does not mean you'll go blind. The treatments for Glaucoma are very good, and stop the disease from progressing.
I'm not online very often, so I might not see this thread again, but I do reply to PMs so if you have questions I can answer them.