185
TEST METHOD
Binocular Visual Function Test
4
4.4.13 Schober test
Use: To correct heterophoria
Chart: Schober
Applicable model: CP series T, P, and F, and ISO / SSC-330 (300) T / SC series G, G+, T and P
Auxiliary lens: Red filter on the right eye, green filter on the left eye, binocular rotary prism
Ideal appearance:
Right eye
Left eye
Binocular vision (Orthophoria)
Right eye
Left eye
Binocular vision (Orthophoria)
[Procedure example]
1
Present the Schober chart.
Press
or
.
The red filter is placed in the right measuring window and the green filter is placed in the left
measuring window.
The base in/out prism powers can be entered.
When
or
is pressed again, the base up/down prism powers can be entered.
2
Ask the patient, “Can you see a green circle and red cross?”
Yes
Go to the next step.
No
The test cannot be continued.
3
Ask the patient, “Is the cross in the center of the circle?”
Yes
Orthophoria
No
Heterophoria – Go to the next step.
4
Ask the patient, “Is the cross shifted to the left or right?”
Right
Esophoria
Left
Exophoria
The cross is in the center.
No horizontal phoria
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 ...
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 ...
Страница 302: ...284 EMC ELECTROMAGNETIC COMPATIBILITY 161221687130 承認済 Uncontrolled copy when printed ...