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※ Attention
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In case of distorted vision, this test is not available for the
normal visual acuity above 1.0 or an accurate visual acuity test.
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Sometimes a patient does not respond to this test. In some
cases, a patient cannot compare the black letters in red and
green background respectively, and cannot react following his
preference.
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If a corrected vision of a patient is 1.0, you must ask him
whether he is able to see well “29 in red and 92 in green.” In
case a corrected vision is low, ask him to read the bigger letter
on the upper side.
10-4.
Jackson Cross Cylinder Test
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Purpose: Subjective test, revise maximum circumference refractive
power and axis for Monocular, using Jackson Cross Cylinder.
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Chart: Dot-Group Chart
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Auxiliary Lens: Cross Cylinder Lens (0.25 / 0.50)
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Objective: The Dot-Group Chart must be seen as same, although the
Cross Cylinder is crossed.
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Operation Sequence
1.
Tap (R) or (L) to choose the eye for test.
2.
Tap Dot-Group Chart button to move on to Cross Cylinder Test
Mode.
3.
Select Auxiliary Lens on option controller
4.
When you choose between [CC 0.25] and [CC 0.50], [1] and [2]
button appear at the bottom.
Содержание Smart DR13
Страница 1: ......
Страница 33: ...32 Fig 21 Controller View Screen...
Страница 37: ...36 Fig 25 List View and Detailed View Received data...
Страница 44: ...43 Fig 31 Set the Risley prism left and the Jackson cross cylinder Right...
Страница 46: ...45 Fig 33 Pop up selecting Auxiliary lens and CP Operation penal...
Страница 50: ...49 Fig 35 Adjustment of the SPH CYL AXIS Value...
Страница 61: ...60 Fig 50 Near Horizontal Von Graefe Test...
Страница 85: ...84...
