Adaptica 2WIN Operating instructions

Troubleshooting & Measurement Tips
Rev 1

Troubleshooting | Light Conditions
Not Good Good
The image looks brighter than usual due to
the high presence of IR light.
2WIN is giving a low Reliability index (R5)
and the related warning

Troubleshooting | Out of Focus
To obtain the best focused image
adjust the distance in order to get the brightest and smallest corneal reflexes
Not Good Good
Large corneal reflexes and not so bright Small and bright corneal reflexes

Troubleshooting | Eye Aperture
2WIN uses the signal light coming back from pupils
For a good quality exam 2WIN needs full pupils aperture
Not Good Good
Eye’s aperture is not good.
This may affect the Cylinder output, or
may result in a FIXATION error
Eye’s aperture is good. 2WIN can
get all the info coming from the
pupil response

Troubleshooting | Pupils Size
2WIN’s best performance is at 5 mm of Pupil Size (PS)
Too small Good Too large
Smaller pupils (e.g. 3 mm):
too little information to analyse
Larger pupils (e.g. 9 mm): possible presence of
high order aberrations on the eye’s edge

Troubleshooting | Spurious
Reflections
Not Good Good
Occlusor could generate some spurious reflexes, so
2WIN is not capable of detecting pupils.
The measure may fail or you can get FIXATION error.
To avoid this issue, please:
•Keep the lenses clean as any other usual pair of glasses
•Ask the patient to slightly tilt the occlusor

Troubleshooting | Fixation &
Patient Attention
Not Good Good
Patient is not looking at the 2WIN, as the
position of corneal reflexes is spread.
It could appear an output error or a
FIXATION error
Patient is looking at the 2WIN.
The corneal reflexes are around
a small area.

Troubleshooting | Binocular or Monocular
One eye has some desease?
The 2WIN suggests to use the
monocular mode in order to calibrate
one eye at a time to be more precise

Measurement Tip | Age range selection
2WIN performs a software correction for the accommodation, based on the selected age range.
If the correct age range is not selected, 2WIN measurement results could be affected, especially
in case of young patients with a hyperopic defect.
How toselect the age range?
Before starting a measurement, from the home screen, long press to the right the joystick button.
Can I use cycloplegic drops to avoid accommodation ?
Yes, selecting the age range 60-99yrs.

Measurement Tip | Attention features
In case of fixation problems, enable the central
fixation target from 2WIN menu > Measurement
> Fixation > Central Fixation.
In case of children or not cooperative patients,
enable Sound and/or Visible attention features
by pressing the Interactivity button.
We recommend activating first the sounds.
Activate visible attention features only when
the sounds are not enough.
Interactivity button
Central fixation LED

Measurement Tip | Glasses and CL
2WIN is able to measure refraction even if the
patient is wearing glasses or contact lenses.
However, glasses and contact lenses
wearing is not recommended, because they
may cause spurious reflections during the
measurement.

Measurement Tip | Clean 2WIN lenses
Periodically clean 2WIN lenses to prevent dust
accumulation, which could affect the measurement
results.
It is suggested to clean lenses at least once a year -
more frequently if 2WIN is exposed to dust.
The cleaning of the lenses must be done with
compressed air (the cans for cleaning PCs are fine).
Detergents and solvents must be avoided.
Keep always clean:
✓Frontal objective
✓Telemetry lenses
✓External LED
External LED Frontal objective
Telemetry lenses

2WIN Dos and Don’ts
Dos:
✓Always select the correct age range
✓Check that the patient is looking at 2WIN and keeping his/her eyes wide open
✓In case of fixation problems, enable the central fixation target, the attention features or
select monocular mode
✓Always check the Reliability Index. If needed, repeat the measurement
Don’ts:
✓Don’t use 2WIN as an autorefractometer. 2WIN is a vision screening device!
✓Don’t use 2WIN without practicing first

General tips
Software updates
Always keep 2WIN software updated to the last version, available here:
https://www.adaptica.com/products/2win/
Batteries
✓Do not recharge 2WIN battery through the USB cable.
✓Do not use swollen or damaged batteries.
✓When 2WIN is used in 2WIN-S configuration 2WIN’s internal battery must be removed.
Error messages
Carefully read warnings and error messages. If you need help, contact [e-mail]

Thank you!
adaptica.com
[e-mail]