75
10-13.
Vertical Von Graefe Test
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Purpose: Operate vertical Heterophoria test in a way of Von Graefe
during subjective test.
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Chart: Vertical Von Graefe chart
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Auxiliary Lens: Rotary prism for right eye, 10△BU prism for left eye
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Objective: Left horizontal line and right horizontal line should be
arranged as one straight line in the middle.
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Operation sequence
1.
Select vertical Von Graefe
chart.
2.
After entering in vertical Heterophoria test mode, ask the patient
whether horizontal bars are located as one straight line.
If the answer is yes, there is no Heterophoria.
If the answer is no, it is Heterophoria.
3.
In case of Heterophoria, ask the patient whether the right-bar is
higher or the left-bar is higher than another one.
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In case that right bar is lower: “Right Hyperphoria”. Turn the
dial counterclockwise to increase BD prism, until two horizontal
bars are arranged as one straight line.
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In case that left bar is lower: “Left Hyperphoria”. Turn the dial
clockwise to increase BU prism, until two horizontal bars are
arranged as one straight line.
4.
When the test is over, press [OK] button to save the result, or
press [CANCEL] button to delete the result.
Summary of Contents for Smart DR13
Page 1: ......
Page 33: ...32 Fig 21 Controller View Screen...
Page 37: ...36 Fig 25 List View and Detailed View Received data...
Page 44: ...43 Fig 31 Set the Risley prism left and the Jackson cross cylinder Right...
Page 46: ...45 Fig 33 Pop up selecting Auxiliary lens and CP Operation penal...
Page 50: ...49 Fig 35 Adjustment of the SPH CYL AXIS Value...
Page 61: ...60 Fig 50 Near Horizontal Von Graefe Test...
Page 85: ...84...
