Nidek Medical RT-5100, Руководство оператора

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67
OPERATING PROCEDURE Standard Program Refraction
2
3
Press .
Program #7 starts.
The left eye is occluded. The subjective
refinement starts.
4
Start subjective refinement.
1) Confirm that the patient can read the
presented chart.
When the patient can read even one letter
on the chart, go to the next red-green test.
5
Refine the spherical power with the red-
green test.
1) Press .
The SPH +0.50 D lens is automatically
added to fog the vision. The red-green chart
is presented.
When the cylindrical power is 0.00, the
message whether the cross cylinder test is
skipped or does not appear. When the skip
is selected, Steps 5 to 7 are skipped and the
red-green test starts in Step 8.
*16
2) Reduce fogging gradually until the
sharpness of the letters on the red and
green sides appears equal.
Letters on the red side are sharper.

Turn the dial clockwise one increment.
Letters on the green side are sharper.

Turn the dial counterclockwise one increment.
• In this spherical refinement, a circle of least confusion is maintained on the retina for the
next cylindrical axis measurement with the cross cylinder. When the patient cannot see the
red and green sides equally, make the green side sharper slightly.
6
Measure the cylindrical axis.
1) Press .
The dots chart is presented.
A cross cylinder lens is placed. The cross cylinder lens type is switched between [Auto], [±0.25],
and [±0.50].
When the cylindrical power of the objective value is 0.25, the same cylindrical power measurement
as Step 7 starts before the cylindrical axis measurement.
*16
*16. When the “Intelligent XC” parameter is set to Yes (factory setting), the order or measurement type changes depending on
the CYL value (cylindrical power). See "3.19 Parameter Settings" (page 133) for details.
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