EZER EDR 9000, Руководство по эксплуатации

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Operation
Operation
Manual
Manual
2. Pre s s (R) o r (L) to c ho o s e the fie ld fo r te s t.
3. On the touch screen, press [CC 0.25] [CC 0.50] button to change it into Jackson
Cross Cylinder Mode.
4. While pressing number
⑴
and number
⑵
, ask the patient
which side letter is seen more clearly.
▶ If number 1 is seen clearly, turn the dial counterclo direction).
▶
If number 2 is seen clearly, turn the dial clockwise(- direction).
5. To estimate the distorted vision axis, press [A] or left/right button. To estimate
circumference power, press [C] or left/right button.
[Figure 10-12] Jackson Cross Cylinder Test (Distorted Vision Axis Test)
10.13 Dua l Cro s s Cylin d e r Te s t
! Purpose: In subjective test, revise maximum circumference refractive power and axis for
Monocular, using Dual Cross Cylinder
! Chart: Dot-Group Chart
! Auxiliary Lens: Dual Cross Cylinder Lens (DUAL)
! Target: Separted two Dot-Group Chart must be seen samely.
! Way of Test
1. On Special Chart clause of touch screen, press Dot-Group Chart to move on to
Cross Cylinder Mode.
2. Press (R) or (L) to choose the field for test.