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Hello and thank you for your question.
A higher pressure reading does not necessarily mean you have glaucoma now if you didn't before. However, it does mean that this particular part of the glaucoma puzzle is abnormal and it may lead to a glaucoma diagnosis in the future. Unless there is damage to the optic nerve or damage to the peripheral vision or imminent damage to such, then your doctor may just closely observe. Damage can be detected by: 1. the visual field test you took (the white bowl test), which shows the doctor if you've lost any peripheral vision, 2. by the way the optic disc looks on examination (how big the cup-to-disc ratio is and if the rim of the optic disc (the area on the outside of the cup in the center) has notches or areas that are selectively thinned out, and/or 3. A scan of your optic nerve called an optical coherence tomography scan (OCT).
So with a normal visual field test, it is unlikely you have glaucoma, but that is just one part of the puzzle, albeit a very important part of the puzzle. Glaucoma can sometimes be a murky diagnosis. There is, unfortunately, not one single test that can be performed that will allow an ophthalmologist to diagnose it. It is diagnosed after a handful of tests are performed and the preponderance of evidence points to it.
Even if you were diagnosed with glaucoma, for the vast majority of people who keep up with their doctor visits and drops schedule, vision loss is unlikely. It is just a diagnosis to keep on top of. The fact that you don't have any on your visual field is very encouraging. Even still, if it were happening, glaucoma damage usually happens very slowly, so don't get too panicked while waiting to talk to your doctor. The signs seem to be okay so far, from what you're telling me.
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My opinion is solely informative and does not constitute a formal medical opinion or recommendation. For a formal medical opinion and/or recommendation you must be examined by your doctor.