Nidek Medical LM-7, Руководство оператора

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3. OPERATING PROCEDURE : Progressive Power Lens Measurement
2
Set a lens.

“3.3 Lens Setting” (page 32)
❖
The following is the procedure for measuring the right-eye lens.
3
Measure the distance power.
1)
Bring the intermediate portion (progressive zone)
onto the nosepiece.
Place a portion that is slightly lower than the center of
the lens on the nosepiece.
The target indicating the distance portion is dis-
played.
The arrow shows the direction in which the lens
should be moved.
2)
Move the lens horizontally to align the target to the
vertical line of the crossline.
3)
Slowly move the lens backward (upward on the
screen) to align the target to the crossline.
If the target is shifted to the right or left from the verti-
cal line of the crossline while the lens is moved, move
the lens horizontally.
When the vertical position is roughly aligned, the
arrow disappears.
4)
Precisely adjust the lens vertically and horizontally to
align the target to the crossline.
When the target changes to (cross) and the
measured data stabilizes, the measured data is auto-
matically locked in.
The screen automatically changes to add power mea-
surement for the near portion.
• To correctly measure the progressive power lens, note the following.
• First align the lens horizontally, then vertically.
• Move the lens while the frames are constantly in contact with the lens table.
• Ensure that the lens back surface is constantly in contact with the nosepiece.
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