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Instructions for Use - Low Condence Readings
Instructions for Use - Low Condence Readings
AT550 measurements are made in a few milliseconds and occur at random relative to
the ocular pulse. Normal measurement uctuation of 2 to 4 mmhg should be expected
due to the cardiac-related pulse amplitude. Occasionally an erroneously high reading
may appear (a “yer”). The AT550 distinguishes these readings by putting brackets
around the value, as shown on the screen below.
A “yer” is used to compute the average, which would create an erroneously high
value. By taking a fourth measurement, the AT550 will automatically replace the
“yer” value.
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