46
OPERATING PROCEDURE
Standard Program Refraction
11
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 not appears. When the skip is
selected, Steps 11 to 13 are skipped and
the red-green test starts in Step 14.
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.
12
Measure the cylindrical axis.
1) Press
.
The dots chart is presented.
A cross cylinder lens is placed. The cross cylinder lens type is switched among [Auto], [±0.25], and
[±0.50].
When the cylindrical power of the objective value is 0.25, the same cylindrical power measurement
as Step 13 starts before the cylindrical axis measurement.
*10
When the cylindrical power of the objective value is 0, proceeding the program displays the mes-
sage “No Cylinder power. Skip the Cylinder test? Press [YES] or [NO].”
*11
Selecting “YES” skips
Steps 12 and 13 and then proceeds to Step 14.
• When the cylindrical power is 0 and “NO” is selected for the message “No Cylinder power.
Skip the Cylinder test?” or the cylindrical power becomes 0 during measurement, the
cylindrical power can be additionally reconfirmed by changing the axis.
For details, see the note of "4.2.2 Astigmatism test with cross cylinder lens" (page 157)”.
*10.
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.
*11.
When the “Intelligent XC” parameter is set to “Yes” (factory setting), the message is displayed.
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Содержание RT-5100
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Страница 46: ...28 BEFORE USE Getting Started and Exiting 161221687130 承認済 Uncontrolled copy when printed ...
Страница 226: ...208 TEST METHOD Visual Acuity Test by ETDRS chart 161221687130 承認済 Uncontrolled copy when printed ...
Страница 274: ...256 MAINTENANCE List of Replacement Parts 161221687130 承認済 Uncontrolled copy when printed ...
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