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86
10-19.
Near Point of Convergence Test
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Purpose: measure the minimum point on which the convergence is
available.
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Chart: near point chart
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Auxiliary Lens: None
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Objective: Measure the value of BREAK and RECOVERY.
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Operation sequence
1.
Press [ADD VA] button
, and press [NPC] button on
option controller to enter the near point convergence test mode.
2.
Adjust the location of near point chart as the patient can verify
it.
3.
Moving near vision chart or ballpoint pen close to the patient,
find out the point where the end of ballpoint pen or the chart is
divided. And record the distance in ‘BREAK’ item
4.
Vice versa, while pulling near vision chart or ballpoint pen away
from the patient, find out the point where they are united as one.
Record the distance in ‘RECOVERY’ item.
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...