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7 Quick user guide
Register your 2WIN: registration takes less than 1 minute!
It's highly recommended to register your 2WIN at:
http://www.adaptica.com/user-registration/
Important
• Read carefully the Chapter 6 – Precautions of the present manual before operating
the device.
• The 2WIN is a binocular refractometer and vision analyser. It measures refraction of
both eyes at the same time, at the distance of 1 meter.
• The 2WIN should not be confused with a table-top auto-refractometer (AR). ARs are
designed to measure refractive errors of one eye at time, in an artificial condition of
far fixation. Please do not consider the 2WIN a small portable auto-refractometer or
two small ARs glued together!
• Working in natural binocular conditions the 2WIN allows to evaluate simultaneously
not only refractive errors, but also gaze direction, ocular alignment, pupil diameter,
pupil distance and the accommodative balance/unbalance between the 2 eyes. Many
other features can be measured by the 2WIN using optional Applications (2WIN
APPs).
• Please familiarize yourself with the measurement conditions and techniques of the
2WIN in order to exploit its full potential.
7.1 The 2WIN
• The 2WIN detects a patient’s real-time refraction in the most natural environmental
conditions.
• It is a binocular instrument that measures refraction on the basis of eccentric InfraRed
photo-refraction (also photo-retinoscopy). Both eyes are measured at the same time
in free space, while fixating at 1 meter.
• It must be operated in a dim light environment to ensure sufficient pupil size and
reduce accommodation, except if used with the KALEIDOS
• accessory.
• It is hand-held, battery operated, very light, non-invasive, fast and easy to use.
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