47
OPERATING PROCEDURE
Standard Program Refraction
2
2) Measure the cylindrical axis with the cross cylinder lens.
Flipped cross cylinder:
Ask the patient which is sharper, chart 1
presented by pressing
or chart 2 pre-
sented by pressing
.
Types of cross cylinder lens
When chart 1 is sharper.
Turn the dial counterclockwise one incre-
ment.
(Also possible by pressing
)
When chart 2 is sharper.
Turn the dial clockwise one increment.
(Also possible by pressing
)
Repeat the above until both charts appear
equal.
Auto cross cylinder:
Charts 1 and 2 are presented simultane-
ously. Both chart positions appear in the
lower left corner of the screen.
When chart 1 is sharper.
Turn the dial counterclockwise one incre-
ment.
(Also possible by pressing
)
When chart 2 is sharper.
Turn the dial clockwise one increment.
(Also possible by pressing
.)
Repeat the above until both charts appear
equal.
161221687130 承認済
Uncontrolled copy when printed.
Содержание RT-5100
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Страница 46: ...28 BEFORE USE Getting Started and Exiting 161221687130 承認済 Uncontrolled copy when printed ...
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Страница 274: ...256 MAINTENANCE List of Replacement Parts 161221687130 承認済 Uncontrolled copy when printed ...
Страница 302: ...284 EMC ELECTROMAGNETIC COMPATIBILITY 161221687130 承認済 Uncontrolled copy when printed ...