I have need of a home tonometer but am concerned about their accuracy at the higher pressures, i.e., in the 25 to 35 IOP range. I have noticed that most of the manufacturers’ data, when comparing to the GAT is in the normal range (16 to 21). This has little value to me since for the past 23 years my pressures have been in the mid to high twenties. I have had no vision loss and no indication of any change to the optic nerve.
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