Nidek Medical AFC-330, Руководство оператора

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OPERATING PROCEDURE : Image Capture (Normal Photography Mode [Auto shot, No blink])
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2.3.2 Image Capture without automatic functions
Image capture with Manual selected with the Auto/Manual toggle button
All the auto functions are disabled.
Because the auto shot is disabled, the eyelid and eyelashes mark
is not displayed.
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Perform Steps 1 to 4 of “2.3.1 Image Capture with auto shot” (Page 58).
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Make the (eight) cornea-reflected spots reflected from the cornea appear.
When the eight cornea-reflected spots are detected, the electronic working dot appears.
3
When the electronic working dot appears, perform alignment in the up, down, right, and
left directions using the joystick so that the electronic working dot is adjusted to the cen-
ter of the target mark.
* If the electronic working dot does not appear (with the required pupil diameter detection
mark displayed as due to failure to detect the cornea-reflected spots), perform align-
ment so that the circle formed by the cornea-reflected spots and the required pupil diame-
ter mark become concentric.
4
Perform the forward and backward alignment using the joystick so that only a single line
of the indicator is displayed.
For the joystick movement amount, see the working distance indicator and the target mark.
* If the electronic working dot does not appear, the working distance indicator does not
appear even if proper alignment is achieved.
In such a case, perform alignment in the forward and backward directions so that the cor-
nea-reflected spots can be seen most clearly.
Move the joystick back to move the image capturing unit away from the pa-
tient’s eye.
The alignment is optimum.
The indicator is displayed in yellow (not in the fundus observation screen).
Move the joystick forward to move the image capturing unit closer to the pa-
tient’s eye.
Too close to the patient’s eye
Too far from the patient’s eye
When the target mark appears like this, the cornea-reflected spots are not de-
tected. The same indication appears for vertical and horizontal misalign-
ment.
When the target mark appears like this, the cornea-reflected spots are not de-
tected.