Nidek Medical AFC-330, Руководство оператора

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OPERATING PROCEDURE : Image Capture (Normal Photography Mode [Auto shot, No blink])
For the joystick movement amount, see the working distance indicator.
 If auto focus is not activated
If the fundus focus undetection mark* is displayed, the focus may not be adjusted to the fundus prop-
erly. Adjust the focus using the focus knob.
* The fundus focus undetection mark disappears after blinking six times. (See “ 4. Fundus
focus undetection mark” (Page 22).)
Adjust the focus using the focus knob so that the upper and lower lines of the focus split
form a single line, or that only a single line of the split indicator is displayed.
• The auto focus may not be activated for certain eyes such as those with cataract, or severe
myopia or hyperopia that causes refractive error outside the range between -12 D and +15
D.
In such a case, insert a minus compensation lens for severe myopia and a plus compensation
lens for severe hyperopia using the compensation lens select lever, then adjust the focus using
the focus knob.
When a compensation lens is inserted, the focus split and the split indicator are not displayed. So
the operator needs to adjust the focus using the focus knob while observing the focus condition in
the screen.
• Be sure to stop the compensation lens select lever at the position where a click is felt.
If not, the right or left side of the image becomes dark and proper images cannot be captured.
Too close to the patient’s eye
Pull the joystick to move the image capturing unit away from the patient’s eye.
The alignment is optimum.
Too far from the patient’s eye
Move the joystick toward the patient to move the image capturing unit closer to the
patient’s eye.
Focus knob
Split indicator
Focus split
Fundus focus undetection
mark