Welch Allyn Spot VS100 Installation guide

Basic Instructions for use in the Lions Screen Kid Sight vision screening program.
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Introduction - Welch Allyn Spot Vision Screener VS100
These Basic Instructions are a guide designed to help you understand the basic capabilities and operation of
your Spot Vision Screener VS100 as it will be used to vision screen students for the Lions Screen Kids Sight
vision screening program.
The vision screener is a hand-held instrument with a video display on the rear of the unit that provides
visualization of the student and assists with alignment. The video display also provides user interface
functionality for data input and display. The vision screener provides both visual and audible cues to attract
the student’s attention and gaze. The device generates a rapid collection of the data for easy evaluation of
the most difficult students with limited compliance. Each screening provides simultaneous binocular
assessment of the student’s refraction, pupil size and gaze.
The Spot Vision Screener is intended to produce optical images that can help identify refractive errors and
ocular misalignments by detecting special light reflexes from each eye during screening. The Spot Vision
Screener evaluates these light reflexes from the retina to estimate refractive error. It also estimates pupil
size, pupil distance and eye gaze deviation. It is intended for use on subjects six months of age through
adults.
This type of photoretinoscopy device will be used to identify whether the subject should be referred to an
eye care specialist for further evaluation. This screening is not intended to replace a full eye examination.

1. ………. LCD Screen
2. ………. Neck Strap Mount
3. ………. AC Power Connector
4. ………. Power Button
5. ………. Wrist Strap Mount
6. ………. Serial Number Label
7. ………. Tripod Mount
8. ………. Battery Charge Green LED Indicator
(Flashing) or charged (Continuous)
9. ………. USB Port
10. …….. Ambient Light Sensor
1. ………. Range Finder
2. ………. Front Glass
3. ………. Speaker
Front View of Vision Screener
Features
Rear View of Vision Screener

Battery status/level indicator
Battery charging
Wireless On/Off button
Sound off
Sound on
Continue
Back
Exit

Getting Started
Charging Spot
Spot contains a rechargeable battery for mobile use. To charge the battery, tilt Spot forward and find the
power connector port , then gently insert the power connector from the AC adapter, as seen below. DO NOT
force the power connector into the power port on Spot. It should easily insert. Forceful insertion can cause
damage to Spot and potentially void the limited warranty. Finally, plug the AC adapter into an available AC
outlet. When the battery charge indicator (green LED) is steady, no further charging is required (Figure 1).
Spot will also run directly off the AC power source.
Wrist Strap
ALWAYS use the included wrist strap as extra precaution to help prevent
damage to Spot if it slips from your hands. Attach the wrist strap to the pin
located under the handle. DO NOT carry Spot by the wrist strap. The wrist
Strap is an extra precaution but does not guarantee damage will be
prevented if dropped.
Tripod mount
The vision screener can be mounted to a standard photographic tripod. A
¼-20 threaded mount located on the bottom of the device is available for
attaching a tripod.
Powering Spot On and Off
To power on Spot, press and release the power button. The system will
take approximately 30 seconds to complete its start-up process.
When complete you will be at the Main Menu or Home Screen.
To power off Spot, hold the power button for about 2 seconds. A
confirmation screen will appear to confirm shutdown of the device.
Figure 1

Display Window
When the vision screener is powered on, the main menu or Home Screen will appear.
Touch Screen Display Options:
1. Age Range –USE THIS OPTION TO START VISION SCREENING
To begin instant screening, with no personal subject data, select the age range of the student from
the listed age options.
2. START Button –DO NOT USE THIS OPTION
The START button will allow you to enter first and last name, gender & date of birth/Age, etc.
3. Icons on Bottom of Screen
•Queue –View/Select queued subjects from a list; Will Not Be Used
•History –View completed records. Select this option at the end of the day to delete all data.
•Tools –A variety of options to customize the vision screener.
Figure 2

Helpful hints
•No activity on the vision screener —After 60 seconds the display screen will dim; after 5 minutes the it
will automatically turn black to conserve battery power. Tap the display screen to ‘wake up’the vision
screener or press the power button. If the screen does not light up, plug in the power cord and try again.
•To change the time-out duration to 30 sec, 1 min or 2 min, go to Tools and select Results icon.
•You can turn the capture sound on/off by pressing the icon in the top right corner of the capture screen.
•To delete ALL records from the vision screener—Go to the History screen and select Clear All icon.
Select Delete to delete all records.
•Avoid powering off during a screening —Once in the screening mode, exit by selecting the Exit button,
then power down the device normally.
•Low Battery —When the battery level reaches a very low level, a notice will appear to the user
indicating they should insert the power cable or the device will shut down. If no power cable is inserted,
the device will automatically shut down due to low voltage.
System restart
1. To power cycle the vision screener - press and hold the On/Off button until a confirmation screen
appears. Select Confirm to power off.
2. When the screen turns black, wait 30 seconds and then press the power button to turn the vision
screener back on. Ensure the device has power by plugging in the power cord.
System freeze
In the event the vision screener locks up and is unresponsive to touch, you will need to
perform a hard system reset.
1. Press the On/Off button.
2. If the Power Off window appears, select Confirm to shutdown the device.
3. If not, press and hold the On/Off button until the screen goes black, then release the On/Off button.
4. Wait about one minute then perform the normal start-up process.

SETTING UP THE SCREENING ENVIRONMENT
General Space Requirements:
Screenings should be conducted in a room as free from distractions as possible and in which lighting can be
controlled. There should be enough space for one to three screening stations consisting of 3 chairs and a
tripod stand for each station, depending on the size of the school. There should also be space to set up a
tally table, not too close to the screening station(s) and there should be enough space for student traffic
entering and exiting the screening stations. There should be an AC power outlet in the area for plugging in
the AC adapter if needed.
Screening Distance:
The distance from the front of the Screener on the tripod stand to the patient's eyes is one meter, or 3.3
feet.
Screening Environment:
It is important that the screening area does not have direct sunlight or lighting from halogen or other heat
producing bulbs. Avoid lighting, mirrors or other reflective surfaces in front or behind the student. The
screening device or child should not be looking into a light source or reflection. For optimal screening
results, screen in an environment with lower level subdued lighting. Be sure to eliminate or block any
sources of lighting reflecting on the subject’s eyes. Excessive lighting can cause the student’s pupil size to
become smaller and can decrease your chances of a successful screening. The lower the light level, the
better the screening device will work. When setting up to do vision screening, you should set chairs up so
that the children being screened face away from any residual light source and face the darkest wall or
darkest part of the room.

Preferred Operator Position
Operator seated in a chair with
device placed on top of tripod
platform. Slowly move device
forward and back on platform .
Operator assisted by helper.
Incandescent
Lights
Sunlight &
Windows

VISION SCREENING A STUDENT
Set-up the tripod with the platform top . Position the center of the tripod platform approximately 1 meter
from student. Using the wrist strap, place the Spot Screener on top of the platform. Adjust the tripod
platform position up or down until the subjects eyes are aligned with the screener. Slowly move the Spot
Screener forward and back on the tripod platform until the display screen turns from blue to gray, indicating
you approaching the capture range. Continue to slowly move the Spot Screener forward and back with
smaller movements until the spinning wheel appears with a gray screen, indicating you are in the capture
range. A blue screen indicates you are too far or too close from the subject and the screen will alert you if
you are too far or too close. Hold the device steady until the screening process is complete.
NOTES:
1. Keeping Spot even (on axis) with the subject’s eyes will promote quicker results.
2. You can turn the capture sound on/off by pressing the Sound Off/On icon near the upper right corner of
the capture screen.
3. If the display screen tells you "pupils too small“, try dimming the lights further to help dilate the pupils
to an adequate size. To insure a successful screening, the student’s pupils should be 3mm or greater. A
large black umbrella can be used to block any residual light.
4. Press the Exit icon near the upper left corner to terminate the screening.
5. If you were unable to capture the subject’s pupils with a successful screening, the screening cycle will
time-out. You can retry the screening by returning to the Home screen.
6. Do not power off Spot during a screening. Instead, exit the screening by selecting the Exit icon, then
power down the device normally.