32
7. Press to test the astigmatic axis with astigmatism disk.
（
1
）
Call in astigmatism disc sighting mark. Ask the patient:
●
Do the definitions of all lines look the same?
●
Which line looks especially distinct?
If the answers are:
●
The definitions of all lines look the same.
No astigmatism, turn to step 9.
One line looks especially distinct.
Multiply the smaller figure (1~6) corresponding to the especially distinct line with 30°, the
astigmatic axis of the negative cylinder can be obtained. For example: line 3-9 is especially distinct,
the astigmatic axis is 3×30°=90°.
（
2
）
Input the obtained axis data.
Содержание YPA-2100
Страница 1: ...YPA 2100 DIGITAL REFRACTOR User Manual Version 1 0 Date 20180521...
Страница 5: ...13 Electrical Schematic Diagram 82 14 Electromagnetic Compatibility 83...
Страница 24: ...19 Press to enlarge PD press to reduce PD 3 Press to exit PD input interface...
Страница 31: ...26 key...
Страница 42: ...37 4 Click key shift to 0 5XC 5 Click the key again shift to automatic mode Slit Prism...
Страница 55: ...50 34 Press to finish the test...
Страница 72: ...67 3 Program 1 A B C D are recommended vision test steps users can also add or delete as needed...
Страница 74: ...69 Add Key Click it to add one step automatically 4 Click key to enter program customizing interface...
Страница 78: ...73 3 Click key to popup input box...
Страница 79: ...74 4 Use CCQ 800 lensmeter to test lens data and convey the date to YPA 2100 5 Click key 6 Choose No00001...
Страница 80: ...75 7 Click key to complete data import...