VX90 - User Manual
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You can initiate a new measurement procedure by opening the Measure screen. The Measure
screen appears at the start up of the machine
Once the Measure screen is opened, you can prepare the patient and select the test options, as
explained under Preparing to Run a Diagnostic
V.1 - Preparing to Run a Measurement
After you open the Measure screen, there are different operations you should do before you
start running the diagnostic:
- Clean the headrest.
- Place a new sheet of protective paper over the chin rest, or clean the chin rest.
- Instruct the patient to sit down, place their chin on the chin rest, and lean their forehead on
the headrest.
- If you need to fine-tune the position of the chin rest, select the Chin Rest up and down
arrows as necessary to move the chin rest up or down.
- If you need to adjust the position of the unit's head, use the Joystick to adjust the position
of the head, up/down / left and right
- Instruct the patient to look at the target (balloon). You should see their eye in the image of
the lens view in the Measure screen.
- Align the patient's pupil with the center of the target (see Centering the Patient's Eye).
Once you have done all of these things, the measurement start automatically if you are set in
automatic mode or manually by pushing the joystick button if you are set in manual mode.
V.2 - Managing the Measurement Procedure
The diagnostic procedure is managed in the Measure screen. In this screen, you can select the
measurement you want to perform, position the unit head and chin rest so that the patient's eye
is centered in the lens, modify default test settings, start the measurement procedure, and
monitor its progress.
Centering the Patient's Eye
In the Measure screen, you can see what the lens is aimed at in the lens view. If the pupil is
visible, move the joystick until the pupil is centered and focused. If the patient's pupil is not
visible at all in the lens view, adjust the position of the unit's head by moving the joystick to the
center of the lens view,
V.3 - Managing Keratometry Peripheral
Measurement
It is the mode to measure the curvature of part around cornea. Based upon the center of cornea,
measure the curvature of part around cornea from the positions of up/down and left/right
direction. It is to indicate the relative eccentricity while comparing the curvature of part around
cornea with the curvature of corneal center.
NOTE
1. Keep pushing K-P button on the right side of the screen.
2. Measurement of Corneal Center
The initial measurement position is the corneal center, and it is indicated as CENTER on the
Bottom left of screen. The curvature measured in the corneal center is the same with the one
measured in KER mode.
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