Binocular Mobile Refractometer and Vision Analyzer

The smartest way to detect refractive errors and vision problems

2Win 2850

Device and main applications

The 2WIN is a mobile binocular refractometer and vision analyzer that measures both eyes at the same time, in real life vision conditions.

  • Refraction of infants and children from 2 months of age, seniors, impaired and non-cooperative patients.
  • Early detection and documentation of multiple amblyogenic factors. Un-aided binocular refraction of all other patients.
  • Over-refraction of glasses or contact lenses.


The 2WIN measurement principle is eccentric photo-retinoscopy. Infrared (IR) light is projected through the patient pupils and onto the retina. Depending upon the refractive error, the reflected light forms a specific crescent-shaped brightness pattern within the pupil. The 2WIN measures spherical power, cylinder power and axis by interpreting the reflected light crescent pattern and position.

The 2WIN infrared exam also provides valuable information about corneal abnormalities as well as ocular media opacities such as cataracts.

2Win 2911



Refractive errors – Myopia, hyperopia, astigmatism and other amblyogenic factors.

Sight anomalies that may be related to anisometropia, anisocoria, strabismus, phoria.

Pupil parameters – pupil size, pupil distance and head tilt.


100% mobile
Binocular, 1 meter working distance
Hand-held, small, light weight
Battery operated (long battery life)
Easy, quick, non-invasive
Cost effective


The 2WIN is equipped with a WiFi module and can be connected to a computer network.

2WIN exams and patient data can therefore be downloaded and visualized on external devices such as smartphone, tablet, pc by using a secure file transfer client software.

The external smart device can be used to input patient information and/or other data and commands.


2WINNY Mask Kit

2WINNY is a funny, attractive and removable mask to help the operators in daily interactions with infants and children. It is an accessory designed to draw kid’s attention on the 2WIN before starting the examination and activating the visible and audible fixation targets.

Operators select the mask on the basis of child age and apply it on the front side of the 2WIN.

Corneal Reflexes Application

Thanks to the “Analysis of Corneal Reflexes”, the 2WIN can help your daily work by automating the analysis of refraction and binocular with a documented information of phorias and tropias (horizontal and vertical).

This application provides complete information regarding the position of corneal reflexes.

  • Measurements are expressed either in prism diopters or degrees.
  • A black hand held filter is included and allows the 2WIN infrared rays to pass through while blocking all visible light: therefore a reliable cover test is made possible.
  • When a deviation appears in the uncovered eye the output is ET: esotropia; XT: exotropia.
  • When a deviation appears in the covered eye the output is EP: esophoria; XP: exophoria.
  • When a vertical deviation appears the output follows the same rules above exposed (HT: hypertropia; IT: ipotropia; HP: hyperphoria; IP: ipophoria).

Intermediate Distance application

The effective management of eye health is an important contribution to a healthy and safe workplace. Fatigue and eye discomfort can be the result of individual difficulties such as UREs, conjunctivitis or wrongly corrected lenses.

Vision problems must be prevented at all ages, even if vision deficiencies are not perceived.

The daily tasks to which the eyes are forced, especially during daily work activities, can lead to fatigue disorders, refractive defects and presbyopia. Staring at a computer monitor for hours has become a part of the modern workday, provoking inevitable consequences on eyes health.

Many symptoms of eye diseases go unnoticed. This is because our brain tends to get used to the visual defects, especially if progressive. If these problems are not properly identified and corrected, they can get worse.

Thanks to the 2WIN new application “Intermediate Distance”, it is now possible to identify the difficulties in focusing at VDUs Distance and to estimate the power of the additional lens needed on top of the prescription.

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 best vision. The application requires the use of an additional lens that is inserted in the central aperture of the 2WIN; the additional add-on lens together with a 66 cm reading chart compose the kit.

2WIN for vision: Let’s fight together to improve people’s sight

The World Health Organization reports approximately 285 million people worldwide countries are visually impaired and at risk of vision loss. Together we can do a lot to improve their lives! We can ensure these families and their children a future, giving them the chance to identify and correct refractive errors and strabismus. Together we can give them a chance for a better life!

Screenings performed using 2WIN in Humanitarian Activities

5000 children - Sankara Eye HospitalBangalore, India
1000 children – CBM Italia OnlusEtiopia, Moldavia, Bolivia
150 children - AdapticaRio de Janeiro, Brazil
300 persons - AdapticaLido di Venezia, Italy
1600 children - AdapticaCampinas, Brazil



The smartest way to detect refractive errors and vision problems.

2Win 2829B
Opticians & Optometrists – helps with practice efficiency
Ophthalmologists – working with infants, children and getting fast report for adults
Pediatric Ophthalmologists – can visit infants
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
Fully automated
Binocular refraction
Pupil diameter
Check of lens correction
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
Connect to IR printer
Customizable with additional features
Operating mode: binocular/monocular
Refraction Measurement: Automatic
Sphere range: +5, -5 D, precision 0.25 D
Cylinder range: +5, -5 D, precision 0.25 D
Cylinder axis: 1° – 180°, step 1°
Pupil size: Automatic detection, 4-7 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: portable wireless printer, supplementary battery, battery-charger, metal case, Wi-Fi connectivity