99
10.23
Ho riz o n ta l Vo n Gra e fe Te s t
!
Purpose: In subjective test, process Heterophoria in a way of Von Graefe.
!
Chart: Numbers Chart
!
Auxiliary Lens: 6
△
BU prism for right eye, and Rotating Prism for left eye
!
Target: Be a state in which the upper vertical line and the lower vertical line are arranged in a
row.
!
Way of Test
1. Press [TEST] button of touch screen and choose [VON GRAFE HORZ.] to process
this test.
2. Ask the patient if the vertical bars are located on one straight line.
▶
“Yes,” no Heterophoria. Test done.
▶ “
No,
”
it
’
s Heterophoria. Process the next test.
3. Of 2 of vertical bar, which bar is the left side.
▶
In case of upside vertical bar on left side: Turn the “Esophoria” dial clockwise to add
BO prism, until the vertical bars are arranged on one straight line.
▶
In case of downside vertical bar on left side: Turn the
“
Exophoria
”
dial counter
clockwise to add BI prism, until the vertical bars are arranged on one straight line.
4. When the test is over, press [OK] button to save the result, or press [X] button to not
save result.
[Figure 10-23] Horizontal Von Graefe Test
Digital Refractor EDR-9000
Содержание EDR 9000
Страница 1: ... EDR 9000 Digital Retractor Operation Manual ED R 9000 Digital Retractor ...
Страница 2: ......
Страница 11: ...9 Appendix Hardware Specification 115 Digital Refractor EDR 9000 ...
Страница 64: ...62 Operation Operation Manual Manual Figure 9 2 Adjustment of 1 st step S C A Value ...
Страница 71: ...69 Figure 9 14 Far Distance Vertiacl Coincidence Aniseikonia Test Digital Refractor EDR 9000 ...
Страница 118: ...116 Operation Operation Manual Manual ...