48
32. Press
to test additional degree
1
）
Lower down the short-distance vision rod and place the visual chart in necessary working
distance (generally 400mm).
2
）
Select the crisscross matrix sighting mark on the short-distance visual chart.
3
）
Ask the patient: the horizontal line or the vertical line, which is more distinct? Or the horizontal
line and the vertical line look the same?
If the horizontal line and the vertical line look the same: there is no need to carry out near vision test
and change the additional degree.
If the horizontal line is more distinct than the vertical line: increase two eyes by +0.25D additional
degree synchronically until the horizontal line looks as distinct as the vertical line.
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...