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6.4 Pupillary Distance (PD) Measurement
6.4.1 Device Setting
On the setup screen, confirm that “PD Measure” is set as “On”, and the lens measurement is set
for both of right and left lens.
※ In case that “PD Measure” is “Off”, the PD measurement value and measurement area are
not displayed.
6.4.2 Measurement Procedure (Right lens ⇒ Left lens)
(1) Pull the lens plate toward the examiner.
(2) Place the framed lens so as that the bottom of the frame
contacts with the lens plate with the frame contacting with
the left nose pad
. Place the right lens on the lens stand
and hold it with the lens holder softly.
(3) Achieve an alignment by moving the right lens back and
forth, and right and left with the frame always
contacting with the lens plate. Store the measurement
values and PD measurement values of the right lens
by pressing the Memory/ Add switch after
completing alignment.
(4) After the measurement of right lens, place the left lens
on the lens stand with the frame contacting with the
right nose pad
, and hold the lens with the lens holder
softly. At this time, it is switched from right lens to left
lens automatically based on the position of the nose pad.
(5) In a manner similar to (3), achieve an alignment of the left lens. After
completing alignment, store the measurement value of the right lens and PD
measurement values by pressing the Memory/ Add switch.
In case that “Auto Memory” on the setup screen is set as “On”, the measurement
values are stored automatically after the message “Marking OK” is displayed.
Measurement of left lens
Measurement of right lens
+3 +3
Measurement screen
Right PD
measurement value
Left PD
measurement value
Right and left PD measurement values
NOTE
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