
65
Confirmation before test: Set “SPH distant vision
→
near vision” to SPH+ADD.
1. Press
, choose “Near Point”, NPC, NPA, NRA, PRA showing simultaneously, to
shift to short-distance mode.
2. Press “NPA” to open binocular testing window.
3. Place the visual chart in the distance of 40cm, make sure the patient see clearly the column
sighting marks.
4. Press “+” and “-” to gradually adjust the spherical power until the sighting mark becomes
obscure. Press the obscure icon, and it is highlighted, then save the prismatic power of the obscure
point.
5. Press “+” and “-” to gradually adjust the spherical power until the sighting mark becomes distinct
again. Press the recover icon, and it is highlighted, then save the prismatic power of the recover
point.
5.5.17 Positive-relative adjustment (PRA) test
Test purpose: to test the positive-relative adjustment when the two eyes congregate in specified
working distance
Test sighting mark: row sighting marks in short-distance visual chart
Confirmation before test: Set “SPH distant vision
→
near vision” to SPH+ADD.
1. Press
, choose “Near Point”, NPC, NPA, NRA, PRA showing simultaneously, to
shift to short-distance mode.
Obscur
Recover
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...