35
11. Press to correct right eye spherical power with red and green sighting mark (first-time
red and green test).
0.50D is automatically added to blur the vision. Call in red and green sighting marks.
1
）
Ask the patient: the letters in the red and green side of the sighting mark, which side looks more
distinct?
If the letter in the red side looks more distinct: press “-” to increase -0.25D spherical power;
If the letter in the green side looks more distinct: press “+” to decrease -0.25D spherical power;
Repeat above steps until the definition of letters in the red side look the same as the definition of
letters in the green side.
Attention: when the definitions of letters in the red and green side can be adjusted consistent, make
the letter in the red side more distinct.
Summary of Contents for YPA-2100
Page 1: ...YPA 2100 DIGITAL REFRACTOR User Manual Version 1 0 Date 20180521...
Page 5: ...13 Electrical Schematic Diagram 82 14 Electromagnetic Compatibility 83...
Page 24: ...19 Press to enlarge PD press to reduce PD 3 Press to exit PD input interface...
Page 31: ...26 key...
Page 42: ...37 4 Click key shift to 0 5XC 5 Click the key again shift to automatic mode Slit Prism...
Page 55: ...50 34 Press to finish the test...
Page 78: ...73 3 Click key to popup input box...