Rodenstock Phoromat 2000, Operation Manual, Page: 80 / 233

Phoromat 2000 Operation Manual
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4.5.9 Schober test
Use: To correct heterophoria
Chart: Schober
Applicable model: Rodachart 420
Auxiliary lens: Red filter on the right eye, green filter on the left eye, binocular rotary prism
Ideal appearance:
Right eye Left eye Binocular ideal
[Procedure example]
1. Present the Schober chart.
Press
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 the Schober chart button 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 → Impossible to continue the test.
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
5.
Ask the patient, “Is the cross shifted upward or downward?”
Upward

Left eye hyperphoria
Downward

Right eye hyperphoria
The cross is in the center.

No vertical phoria