PLUSOPTIX S12C How to use

Vision Screener
Short Manual 9
“Troubleshooting malfunctions
and measuring interruptions”
Plusoptix GmbH
Neumeyerstrasse 48
90411 Nuremberg
Germany
www.plusoptix.com
Edition: 09/17/2018

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Table of Contents
1Troubleshooting guide.....................................................................................................3
2Trouble-shooting when switching device on.....................................................................3
3Malfunctions when using touch screen............................................................................4
4Troubleshooting measuring interruptions.........................................................................5
List of figures
Figure 1: “Measurement values” results page after an inconclusive measurement ................ 5
This manual is a supplementary short manual. For general information about your
Plusoptix device, such as its intended use, basic handling, technical information,
maintenance, service, and warranty information, please refer to the user manual that
was delivered with your device. This user manual can also be downloaded on our
homepage www.plusoptix.com, under support.
List of further supplementary short manuals
1. Adjusting settings and setting up WLAN
2. Preparing and performing a measurement
3. Viewing the measurement results
4. Entering, retrieving or deleting patient data
5. Documenting measurement results electronically
6. Documenting measurement results on paper
7. Exporting back-ups and reports (only plusoptiX S12C and S16)
8. Downloading software updates
9. Troubleshooting malfunctions and measuring interruptions

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1 Troubleshooting guide
Over 80% of all service inquiries relate to errors when switching on the Plusoptix Vision
Screener, errors when operating the screen or measuring interruptions, which have been
caused by errors in using the Plusoptix Vision Screener. These errors can only be attributed
to the Plusoptix Vision Screener in very rare cases. In the following chapters, you will find
step-by-step instructions about diagnostics and troubleshooting.
2 Trouble-shooting when switching device on
a) The “plusoptiX S12” cannot be switched on
If the device cannot be switched on, connect the power adapter to a plug and check
whether the green LED lights up on the upper side of the power adapter. Now connect the
12V charging cable to the device. If the device now switches on, check whether
rechargeable batteries are inserted correctly (see chapter 4 “Troubleshooting measuring
interruptions”. in the user manual of the device).
b) The “plusoptix S12” switches off again immediately
If the device switches off again immediately, the rechargeable batteries are likely to be
discharged. Connect the 12V charging cable to charge the batteries. Check whether the
power supply unit is receiving current (green LED on top of the power adapter lights up).
You can use the device while it is being charged. To do so, simply switch the device on
while the 12V charging cable is connected.
c) The “plusoptiX S16” cannot be switched on
If the “plusoptiX S16” cannot be turned on, plug the power supply into a socket and check
whether the green LED on the top of the power supply lights up. If not, use another
socket. Now connect the medical power supply to the “plusoptiX S16”.

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3 Malfunctions when using touch screen
a) Screen of “plusoptiX 12” switches off suddenly
To save power, the “plusoptiX S12” automatically switches the screen off after some time.
Touch the screen to activate it again. If the screen is not activated by touching it, the
device has switched off automatically. Simply switch it back on again by pressing the
On/Off button.
Note:
Define in Basic settings after how many seconds the device should automatically
switch off the screen and after how many minutes it should automatically switch
off itself.
b) Buttons on screen do not function
plusoptiX S12C:
Place the fingertip of your index finger flat on the screen to select a button. Do not tap on
the screen with the fingertip or finger nail.
plusoptiX S12R and S16:
Tap on the screen with the fingertip or finger nail.
Every time you touch the screen a small mouse pointer indicates the place in which the
screen has been "hit". If you are unable to select a button by touching the screen, check
the position of the mouse pointer on the screen. Ensure that the mouse pointer hovers
above the button.
Please read chapter 3.3 „Connecting USB keyboard and mouse (optional)" in the user
manual of the device, if you prefer this option.
c) Screen flickers during a measurement
If the camera lens of the device is too close to a person or an object, the integrated
infrared LEDs automatically switch off. The camera image on the screen is then not
exposed and shows up black. After a second, the devices switches on the infrared LEDs
again and if the person or object is still too close to the camera, only a short white flicker
appears on the screen before the infrared LEDs are switched off again.
Simply increase the distance between the camera lens and the person or object, and the
exposure of the camera image will automatically adjust again.

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4 Troubleshooting measuring interruptions
If no measurement results are available, an error message and an action recommendation
followed by a "Refer or try again" or “Try again” status message are displayed.
Attention:
If you receive the “Refer or Try again” screening result three times in a row and the
surrounding conditions for the measurement are correct, the child must be referred
for a further examination by an ophthalmologist.
Note:
Causes of errors, which are recognised by the Plusoptix Vision Screener, are
highlighted in red on the “Measurement values” results page and the “Camera
image” results page. Check these two pages after every “measurement
interruption” to limit the causes of errors.
The cause of the error message can normally be better recognised on the
camera image, than on the “Measurement values” results page.
The following overview provides a list of all error messages that are stored in the software:
a) "Picture out of focus"
b) "Patient does not focus on the camera!"
c) "Pupils too big!"
d) "Pupils too small!"
e) "Too much IR ambient light!"
f) "Pupils not found!"
g) "Measurement incomplete!"
h) "Corneal reflexes are too dark!"
These errors are described below.
Error message
Recommendation
of action
Measurement
result
Figure 1: “Measurement values” results
page after an inconclusive measurement

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In this example, the patient is too far away. Other than the eyes, half of the patient’s
face can be see in the camera image.
In this example, the patient is too close to the “plusoptiX S12”. Both eyes are close to
the left and right edges of the camera image.
a) Picture out of focus
Cause: This error message is shown if the measuring distance is not right.
Reason: The camera is well focussed on the measuring distance of 1 meters and
measures from a distance of between 95 and 105 cm.
Tip: You can detect the correct measuring distance when the camera image is shown
in high definition on the screen and you can see each individual hair of the
eyebrows and eyelashes.

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In
this example, the patient is looking to the left of the camera (when seen from the
patient). The red points in the gaze map highlight this line of vision.
In this example, the pupils are greater than 8.0 mm.
b) Patient does not focus on hte camera!
Cause: This error message is shown if the patient is not looking at the hexagon on the
camera face.
Reason: To avoid incorrect refraction measurement values in the periphery of the eyes,
both eyes must be facing the middle of the camera.
Tip: Position the child so that their knees and nose are facing the camera. Do not use
any external fixation aids and stay calm! Both corneal reflexes must be seen in
the centre of the pupil middle on the camera image. Only green points should be
seen in the two gaze maps on the “Measurement values” results page.
c) Pupils too big!
Cause: This error message is shown if one or both pupil diameters are greater than 8.0
mm.
Reason: The pupil reflexes will be overexposed if the pupils are too large. In this case, the
measurement will be interrupted inconclusively. If measurement values are still
shown, these have a greater tolerance.
Tip: Brighten the examination room so that the pupils become smaller.

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In this example, the pupils are smaller than 3.0 mm.
In this example, the sun is shining in the patient’s face from the left. This can be seen
from the shadows over the nose.
d) Pupils too small!
Cause: This error message is shown if one or both pupil diameters are smaller than 3.0
mm.
Reason: The pupil reflexes will be underexposed if the pupils are too small. In this case,
the measurement will be interrupted inconclusively. If measurement values are
still shown, these have a greater tolerance.
Tip: Make the examination room darker so that the pupils get bigger. Avoid an
excessively dark examination room, as children will feel unhappy and try and look
around. The examination room should be at least so bright that you could read a
newspaper.
e) Too much IR ambient light!
Cause: This error message is shown if there is too much infrared light in the examination
room.
Reason: The measurement is carried out using infrared light and other sources of infrared
light (e.g. sun, halogen spotlights, lightbulbs etc.) cause disturbances.
Tip: Close the curtains to block out the sunlight, turn off or dim heat-radiating light
sources or point them in a different direction.

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In this example, neither pupil can be seen completely on the camera image.
In this example, the right pupil (OD) is partially covered by a media opacities (cataract).
f) Pupils not found!
Note:
The error message “Pupils not found!” can have many other causes (e.g. scars
on the cornea, media opacities, cataracts, keratoconus, retinal detachments,
etc.). For this reason, the camera image must be checked in case of this error
message.
Cause: This error message is displayed if the software cannot recognise pupils in the
camera image, the pupil reflex looks unusual or the pupils are partially covered
by reflections, hair, eyelashes or eyelids.
Reason: To be able to take a measurement, both pupils must be fully visible and the
infrared light of the camera must be reflected by the retina.
Tip: Brush long hair out of the face before taking the measurement. Ask the child to
open their eyes wide or lift their chin if they are looking shyly to the ground.
g) Measurement incomplete!

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In this example, the right pupil is covered by the upper eyelashes and the left pupil by hair.
In this example, the patient is sitting at an angle to the camera and looking over his right
shoulder a little. You can see this from the fact that his nose can be seen from the side.
In this example, the patient has tilted their head downwards and is looking up into the
camera. The pupils are partially covered by the upper eyelids.
Note:
The error message “Measurement incomplete!” can have many other causes
(e.g. scars on the cornea, media opacities, cataracts, keratoconus, retinal
detachments, etc.). For this reason, the camera image must be checked in case
of this error message.
Cause: This error message is displayed when the measurement has started, but could
not be completed.
Reason: After a measurement has begun, this must be completed within 20 seconds.
Tip: Start the measurement again immediately by pressing the trigger twice.
Position the child so that their knees and nose are facing the camera. Ask the
child to lift their head or hold the Plusoptix Vision Screener lower down.

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In this example, too little infrared light is reflected from the retina.
h) Corneal reflexes are too dark!
Cause: This error message is displayed if the corneal reflexes are too dark.
Reason: The measurement is carried out with infrared light which is reflected from the
retina. If too little light comes back from the retina, no measurement can be
taken.
Tip: Darken the examination room so that the pupils become larger and more infrared
light can return to the camera.