Nidek Medical HandyRef-K, Operator'S Manual

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OPERATING PROCEDURE: AR (refractive error) and KM (corneal curvature radius) Measurements
3.5.2 AR measurement mode
AR (refractive error) measurement is performed.
1
Perform Steps 1 to 11 of “3.4 Operating Procedure and Measurement Method” (page
48) .
Press in Step 3 to select R (AR measurement mode).
In Step 11, when the focus is aligned to the eye, AR measurement starts automatically.
2
The measurement is performed automatically in the following order:
1)
The scenery chart is fogged.
2)
AR measurement starts.
3)
A beep sounds, then the AR measurement values and the number of measurements are dis-
played.
4)
At this point, if the device remains aligned and in focus, the AR measurement is repeated from
Step 2).
If accommodation is not eliminated satisfactorily at Step 1) during the first measurement, the fog-
ging level will be increased from the second measurement.
When the
“ 4. FOG MODE” (page 89) parameter is set to “3”, fogging will be performed in each
measurement.
5)
When the specified number of measurements is obtained, is displayed on the
screen and measurement is complete.
6)
The measurement results for the refractive power (S, C, A) is displayed.
•
Number of AR measurements
The number of AR measurements differs depending on the
“ 5. AM MODE” (page 89) parameter
setting.
3
Perform Steps 3 through 6 of “3.5.1 AR/KM measurement mode” (page 54) .
AR measure-
ment
AM MODE / YES
When the number of measurements specified by the “
6. AR CONTINUE” (page 89) parameter has been per-
formed obtaining stable data sets and median values,
measurement automatically finishes. If stable data
sets have not been obtained, two additional measure-
ments will be performed then measurement finishes.
AM MODE / NO
When the number of measurements specified by the “
6. AR CONTINUE” (page 89) parameter has been per-
formed, measurement automatically finishes.
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