Topcon CL-300 - Measuring Bi-Focal and Tri-Focal Lenses

28
USING THE INSTRUMENT
MEASURING BI-FOCAL AND TRI-FOCAL LENSES
When a measurement mode button is , bi-focal and tri-focal lenses can be mea-
sured.
,
1 Align the distance vision in the center of the target image and press the MEMORY button
.
2 Move the lens into the near vision region (bi-focal segment).
3 Press the Memory button (Near Vision Measurement Start button in this case).
The measurement mode button is changed to .
4 Measure the bi-focal power and press the MEMORY button again.
To measure the 2
nd
near vision of tri-focal lenses, storing the 1
st
mid vision power auto-
matically changes the button to the button. Tap the button starts the near vision
measurement.
When the Setup screen appeared in the middle of measurement, measurement
values are cleared when the Measurement screen is returned.
INITIAL/PROGRESSIVE/AUTO INITIAL/PROGRESSIVE/OFF
ADD : +1.75
+2.50