Binocular and Mobile Vision Screener

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The smartest way to detect refractive errors and vision problems.

2WIN is a mobile and binocular vision screener that measures both eyes at the same time, in real life vision conditions. It embodies the best and the most complete technologies to fully detect refractive errors, eye abnormalities and vision problems. It measures in the range of -15D to +15D for automatic measurement of dynamic pupils response to programmable light stimulations, and accurately center spectacle lenses. 2WIN is capable of detecting Myopia, Hyperopia, Astigmatism, and other Amblyogenic factors. Additionally, it will provide evidence of sight anomalies that may be related to anisometropia, anisocoria, strabismus, phorias.


2WIN enables you to perform refractometry by using the most innovative, versatile
and accurate technology.

Binocular, 1 meter working distance

Binocular refraction measurement in natural vision conditions.

Dynamic Pupil response

Dynamic pupil response to programmable light stimulations.

Lens centering on frame

Correspondence between the optic center of the lens and the actual visual axis of the eye.

Easy, quick, non-invasive

The 2WIN takes measures fast, in natural mydriasis and in a non-invasive way.

WiFi and printer connected

The 2WIN connects to the internet and allows you to share, record and print exams.

Long life operated battery

Long life batteries allow long intervals of use.

Areas of excellence

Rapid patient vision testing and screening

Refraction and Vision analysis of infants (0-3 year)

Vision care of disabled and/or un-cooperative patients

Analysis of binocular vision and accommodative balance

Early detection and documentation of multiple amblyogenic factors

Objective analysis of under- or over-corrections

Objective Refraction examination

Corneal Reflexes Application [CR-App]

Thanks to the “Analysis of Corneal Reflexes”, the 2WIN can help your daily work by automating the analysis of refraction with a documented information of phorias and tropias (horizontal and vertical). This application provides complete information regarding the position of corneal reflexes. The CR-App compares the position of the corneal reflexes in three defferent mesurements (the first binocular, the second and the third monocular under an infrared occluder.)

Dynamic Pupillometry [DP-App]

Automatic measurement of dynamic pupil response to programmable light stimulations enables the detection of subtle pupillary changes, removing subjectivity from the pupillary evaluation.

Intermediate Vision Application [66cm-App]

Thanks to the 2WIN application “Intermediate Vision”, it’s possible to identify the difficulties in focusing at VDUs Distance and estimating the related additional power.
The 2WIN measures the patient’s refraction while reading from VDUs, at a distance of 66 cm (2’). In all those cases when reading at such distance proves difficult, the 2WIN calculates the necessary additional power (ADD) to restore the best vision.

Lens Centering [LC-App]

Lens Centering App is an application available only on 2WIN. Lens Centering application allows to obtain all the parameters needed for new glasses centering or to check if current glasses centering is correct.
During Lens Centering measurement the patient must wear his/her glasses.


The 2WINNY mask is fun and attractive and can be attached to the front of the 2WIN. It is an accessory designed to draw the child’s attention to the 2WIN during the examination while activating visible and audible fixation targets. It is removable to help the operator select the appropriate mask for the child, depending on his age and design preference.

Technical Information

The smartest way to detect refractive errors and vision problems.


  • Opticians & Optometrists – helps with practice efficiency
  • Ophthalmologists – working with infants, children and getting fast report for adults
  • Pediatricians – can screen infants and children
  • Mission trips – enables large scale screening and exams
  • ERs – checks visual response in trauma
  • Corporate Clinics – enables workforce screening
  • Schools – enables mass screenings


  • Binocular Refraction
  • Monocular Refraction
  • Pupil Distance
  • Pupil Size
  • Head Tilt
  • Direction of Gaze
  • Phorias and Tropias
  • Lens Centering 
  • Presbyopia
  • Pupil Response 


  • Extended measurement range
  • Fully automated
  • Binocular refraction
  • Pupil diameter
  • Dynamic pupilometry
  • Check of lens correction
  • Lens centering on spectacle frames
  • Fully automated and easy to use
  • Operates at 1 m (3’ 3”)
  • Fast measurement
  • Handheld and light weight
  • Battery operated
  • Allows the early detection of refractive errors
  • Ideal with infants, children and non-cooperative patients
  • No drops required
  • Connectable to IR printer
  • Customizable with additional features


  • Operating mode: binocular/monocular
  • Refraction Measurement: Automatic
  • Sphere range: +15, -15 D, step 0.25 D
  • Cylinder range: +5, -5 D, step 0.25 D
  • Cylinder axis: 1° – 180°, step 1°
  • Pupil size: Automatic detection, 4-11 mm, step 0.1 mm
  • Pupil distance: Automatic detection, 30-120 mm, step 1 mm
  • Fixation target: Built-in
  • Acoustic target: Built-in
  • Working distance: 1 m ± 5 cm
  • Data Interface: Wi-Fi, USB, microSD card
  • Printer interface: USB, Infrared (irda)
  • Power: rechargeable battery
  • Battery charger: 110-220 Vac, 0.5 A
  • Size: 165x130x98mm
  • Display: 3.5’’
  • Weight: 840 g (30 oz)
  • Options/Accessories: supplementary battery, battery-charger, metal case, Wi-Fi connectivity

I gladly use 2WIN with small kids even with enfants younger than 24 months because the device catches their attention quickly and gives immediately the refraction measurements.

Dr. Guia Pontiroli
Paediatric Ophthalmology Specialist

For me 2WIN is essential in the daily practice as “second opinion” for the examination of young patients especially the non-collaborative ones

Dr. Giovanni Amerio

With 2WIN, screenings are much easier and simpler to understand thanks to the reference criteria. With the apps it is also possible to do more detailed exams about patients’ accommodation and take the exam even with home visits.

Dr. Mario Fagiano

In our experience 2WIN, housing in Alaska and in a remote Burma clinic, showed that this photoscreener yields refractive estimates very comparable to state-of-the-art Retinomax hand-held autorefractor. It is sturdy, reliable and provides valid early objective screening that will reduce amblyopia blindness for the program that uses it.

Dr. Robert Arnold
Paediatric Ophthalmologist