52
OPERATING PROCEDURE
Standard Program Refraction
Vertical lines
Turn the dial clockwise in 1 increments until the lines appear equal.
Same
It is not necessary to change the addition powers.
• When the patient cannot see the horizontal and vertical lines equally, change the addition
power so that the horizontal lines appear sharper than the vertical ones.
• To continuously perform visual acuity test with addition powers, follow "4.1.3 Visual Acuity
Test with Addition Powers" (page 153).
26
Check the near visual acuity.
1) Press
.
The cross cylinder lenses are removed.
Set the values determined by adding or
subtracting the ones adjusted in Step 20 to/
from the addition powers measured in Step
25 as the addition powers for prescription.
2) Reverse the near point chart and place
the visual acuity chart in front of the
patient.
3) Confirm that the patient can read the
letter whose visual acuity is 20/30.
27
Press
.
Program A is finished.
The near point lamp goes out.
28
Print the measured data.
Press
.
29
Place the final prescription lens in a trial
frame.
161221687130 承認済
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Содержание RT-5100
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