Fig. 18 Size Measurement Mode Screen After Pressing The - Zeiss VISUREF 100 User Manual

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Operation of the device
1
1 Yellow measurement line
2 Diameter of pupil or cornea (in mm)
3 Set zoom
4 Blue measurement line
Fig. 18 SIZE measurement mode screen after pressing the measurement button
• Press the ZOOM function key to enlarge the image (2x or 3x).
• Move the yellow line to the left side of the pupil/cornea using ← L-Bar
and L-Bar →.
• Move the blue line to the left side of the pupil/cornea using ← R-Bar and
R-Bar →.
The resulting diameter (which is the distance between both lines) in mm
will be shown in the SIZE icon (2, Fig. 18) on the screen.
• Press the measurement button (5, Fig. 3) on the joystick to save the value
and return to the SIZE screen displaying the live image of the eye
(Fig. 17).
• Press the RETURN function key to return to the main measurement
menu.

Proper measurement of the corneal curvature will not be possible if
the focus is on the iris.
Two measurements can be performed for each eye (3 and 4 or 5 and 6,
Fig. 17). After the second measurement, a mean value (AV) is shown
(7, Fig. 17).
2 3
4