33
OPERATING PROCEDURE: AR (refractive error) and KM (corneal curvature radius) Measurements
●
Full screen display of measurement ring image
A thumbnail of the measurement ring image is displayed
when AR measurement is complete. If necessary, press
the ring image / retroillumination
button to switch to
the full screen display.
Observe the size, shape, and such of the ring image.
After checking the ring image, press the return
but-
ton to return to the measurement screen.
●
Large area AR measurements
In the AR measurement process, AR central measurement (inner measurement ring) is per-
formed concurrently with AR large area measurement (outer measurement ring).
Large area measured values are AR-measured values over a large range (approx. 6 mm in
diameter). By referring to the large area measured values, the influence that a large pupil has on
vision, such as at night, can be identified.
Large area measured values can be checked on the printed results and data contents can be set by the
“47. L. DATA PRINT” parameter.
The above images are to illustrate the measurement range, not to explain the measurement principle.
6
Measure the other eye in the same manner.
ᵏ
L. DATA
Large area measured values
L. DIFF
Differentiation between central measured values (normal AR values) and
large area measured values
Central measurement
Large area measurement
• If large area measured values have not been obtained due to a small pupil size, “NO DATA” is
printed out instead of the measured values (L. DATA or L. DIFF).
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ᵉ
Summary of Contents for ARK-1S
Page 1: ...AUTO REF KERATOMETER AUTO REF KERATOMETER ARK 1s ARK 1s OPERATOR S MANUAL OPERATOR S MANUAL ...
Page 6: ...IV ...
Page 76: ...70 OPERATING PROCEDURE Operation when Peripheral Devices are Connected ...
Page 112: ...106 SPECIFICATIONS AND TECHNICAL INFORMATION EMC Electromagnetic Compatibility ...
