Eye Pressure: Concerns and Management for Glaucoma - Ophthalmology

Intraocular pressure issues?

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Hello, I apologize for the lengthy message.
On July 12, I went to a general clinic for a retinal examination and found my intraocular pressure (IOP) to be 24 and 25 mmHg (after 5 air puffs).
The doctor suspected glaucoma.
Two weeks later, on July 18, I went to a larger hospital for further examination, and my IOP was 21/21 mmHg after some medication.
The doctor advised me to stop the medication to see how high my IOP would rise.
On July 19, I underwent a visual field test; the doctor did not mention the IOP, but it was on the higher side.
On July 25, I reviewed the test results, which showed an IOP of 22/23 mmHg, and my corneal thickness was measured at 604/610 micrometers, which the doctor considered normal.
On August 22, during a fundus examination, my IOP was again 24/25 mmHg (after 4-5 air puffs).
The doctor then administered anesthetic drops and used a contact tonometer, measuring 18/23 mmHg, which was also normal (I suspect the initial higher reading in my right eye was due to sudden anxiety, as I was more relaxed when the left eye was measured).
On October 10, during a second visual field test, my IOP was 22/23 mmHg, which was normal.
Despite multiple tests showing no significant issues, on October 18, I felt an increase in floaters and went to an unfamiliar hospital for an examination, where my IOP was measured at 31/28 mmHg (by a novice optometrist).
Two hours later, after receiving anesthetic drops, the IOP was around 27 mmHg (measured by a different person).
I find this hard to believe since my previous hospital consistently showed normal IOP readings, and my original doctor advised me not to worry, suggesting annual visual field and retinal examinations.
However, the readings from this new hospital raised concerns (the nurse and doctor were quite rough when cleaning up the anesthetic that had leaked out, which caused some discomfort).
After half an hour, I rushed to another eye clinic where my IOP was 24/25 mmHg, corrected to about 21/22 mmHg, which was slightly elevated.
The experience at the third clinic was quite disheartening, as the numbers varied significantly from the first and second clinics.

1.
Since my fundus, optic nerve, and visual field tests show no issues, should I measure my IOP monthly at the same clinic and have visual field tests every six months?
2.
Is there a discrepancy due to different machines at different clinics? I understand that timing matters, but with so many measurements taken at different times, the IOP readings should not vary significantly between morning and afternoon.
Should I consistently go to the same clinic with the same equipment for more accurate and comparable results? (I also trust that clinic more.)
3.
The doctor at the clinic with the higher readings mentioned that if I have glaucoma in the coming years, I could go blind by age 50.
Since I am young and my optic nerve is currently fine, is there a high probability of developing glaucoma? If I do develop glaucoma, wouldn’t it be challenging to manage it with the right medications to avoid blindness?
4.
Given my situation, am I at risk for developing glaucoma? My prescription is 625/700.
5.
I feel very anxious every time I measure my IOP.
Is this a form of white coat syndrome? Would my IOP readings be higher than at home?
6.
I know that higher IOP is more dangerous; what does my current IOP indicate? Should I be concerned about developing glaucoma in a few years?
7.
Should I be treated for high IOP with medication?
8.
Can long-term monitoring help prevent glaucoma? I am really anxious; since visiting that clinic on October 18, I have been extremely worried and cried on October 19.
9.
In three days, on October 21 (Saturday), I have another appointment at my usual clinic to measure my IOP for follow-up, but I am very worried, so I came online to ask.
Thank you, doctor, for taking the time to read my lengthy message and answer my questions.

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Feichang Konghuan Zhe, 10~19 year old female. Ask Date: 2022/10/19