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3.3.3 Measurement
■ Measure and display the selected measurement item only. Refer to “3.3.1
Setting measurement conditions” for selection method.
■ Be sure to touch the “New” button to delete all the measurement data of
the previous patient before measuring another patient. If new
measurement is started without deleting the previous data, the
measurement data of the previous patient may be included.
■ The deleted data cannot be restored. Carefully check the data before
deleting it.
■ If the measurement value is output when measuring axial length, be sure
to check waveforms, images, and reliability on the view screen.
■ If any problem is found on waveforms when measuring axial length, be
sure to perform other examinations.
■ When the difference between left and right in the axial length
measurement is more than 1 mm, be sure to perform other examinations.
■ When there are multiple higher peaks detected in the axial length
measurement, the retinal pigment epithelium may not have been detected
correctly. Check that the retinal pigment epithelium has been detected on
the caliper screen.
■ As for measurement of the radius of corneal curvature, if the difference
between measurement values on the left and right eyes is large or any
problem is found on the cornea during the preliminary examination, be
sure to check the image of the measurement ring pattern on the view
screen.
■ If reliability of measurement values is low when measuring the radius of
corneal curvature, check the measurement ring pattern. If any problem is
found, be sure to perform other examinations.
■ Do not determine application of LASIK based only on measurements by
this instrument and be sure to refer to other examinations.
■ Do not determine IOL types or ICL sizes based only on measurements by
this instrument and be sure to refer to other examinations.
1) Adjust the patient’s eye height and ask the patient to look at the red lamp in
the measurement window. (Refer to “3.2.8 Patient's eye height adjustment.")
When capturing an image immediately after having the patient blink and
open their eye widely, partial missing in the color code map due to breakage
of the tear film or insufficient opening of the eye can be reduced.
2) Perform alignment. (Refer to “3.3.2 Alignment.”)
If measurement is in auto mode, measurement starts automatically after
alignment is complete. If measurement is in manual mode, press the
measurement button (1) on the joystick (Fig. 2) after alignment is complete to
start measurement.
The number of times the data is taken per measurement can be set in
system setup. (Refer to “3.9 System setup.”)
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