2WIN-S Support
Welcome to Adaptica Support, we are here to help you. In this section you can find FAQ , Manuals, Guides and hints for 2WIN-S products. Please complete the form in the Contact tab of this page or e-mail support@adaptica.com with the serial number of your device, the nature of your problem and a description of the test performed.
I. Setup
What are the ideal lighting conditions? Can the device be used oudoors?
2WIN-S is designed to operate in any light environment, from complete darkness to full sunlight. In fact, Kaleidos tube acts as a true indoor darkroom, so there is no need of a dimly lit environment or special arrangements.
Which position should the patient be in?
The only necessary condition is that the patient looks inside 2WIN-S with eyes wide open. Therefore, the patient can be sitting, standing or lying down thanks to the mobility of the device.
II. The Device
What is the 2WIN-S? What principle is it based on?
2WIN-S is a device that contains the 2WIN which is a binocular refractometer that works at 1 m from the patient’s eyes in normal vision conditions. It therefore measures refraction in both eyes at the same time. The binocular function of the device makes it more relaxing, non-irritating and non-invasive for the patient during testing. The 2WIN measurement is based on eccentric photorefraction. This technique uses infrared light projected across the patient’s pupils onto the retina. Depending on the refractive error, the reflected light forms a specific increase in luminosity inside the pupil. The spherical reaction is calculated according to the intensity of this increase. The 2WIN-S acts as a darkroom for the 2WIN for more precise measurements in any lighting situation.
Is 2WIN-S a portable autorefractomer?
No, 2WIN-S is a stand-alone vision screener. It performs binocular measurements at 1m distance in real life vision conditions.
Are results enough for lens prescription?
No, subjectivity through a phoropter or test glasses is always required. However, the 2WIN-S allows simultaneous binocular refraction during observation in a free space, allowing objective measurement and avoiding the tube effect.
How can I update the device?
There are two different types of updates.
Update of 2WIN Software can be downloaded from the website and needs to be put inside the microSD card. From version 5.3 there is the OTA update feature.
Update of Kaleidos App: it refers to the update of the Application on the tablet that can be done that can be done through Google Playstore.
Can I use a microSD card larger than 32GB?
Of course, any MicroSD card larger than 32GB can be used to save data, as long as it is formatted to FAT32 file system.
Can I print measurement results using a portable Bluetooth printer?
Yes, you can print from the tablet on any printer connected and configured for the tablet. In order to configure the printer, follow the instruction of your printer provider or of the Android/iOS operative system.
How long does the battery last?
The battery lasts up to 2 days without having to recharge.
How long can the device remain on standby?
The machine does not go in standby.
Initial screen does not appear on the display of the device.
- Possible cause: The battery is completely discharged.
- Solution: Charge the battery.
On the display an error message appears.
- Possible cause: Electronic or software malfunctioning.
- Solution: Contact service center, mentioning serial number.
A warning – “Hint check Gaze”- appears on the display.
- Possible cause: The patient is not looking at the machine.
- Solution:
- If collaborative ask he/she to look at the machine
- If not collaborative activate the interactivity features.
A warning – “Hint check Gaze”- appears on the display
- Possible cause: There may be a strabismus problem.
- Solution: It is suggested to measure eyes singularly in two different measurements.
A warning – “Possible strong Anisocoria” appears on the display
- Possible cause: The two eyes have very different pupil diameters (that means anisocoria)
- Solution: It is suggested to measure eyes singularly in two different measurements.
The measurement never ended correctly or prematurely quit while the pupils are detected.
- Possible cause: There may be an hardware problem.
- Solution: Run the Self Test diagnostic through the MENU and contact service.
What are the ideal pupil dimensions?
Pupils are intrinsically big due to light conditions. You can also reduce pupil size. Look at the manual for instructions.
Can different measurements be found in the same person with 2WIN-S, even with the same reliability?
The measurements are much more stable due to the controlled lighting conditions compared to a measurement with just the 2WIN. However, the human optical system is another extremely important variable and is continually changing. A person may have different refraction in the morning and in the evening, including diopters of difference.
What influence does accommodation have?
Measuring at a distance of 1m, accommodation certainly plays a part. This will clearly be more evident in children than in adults. 2WIN-S has only a slight accommodation stimulus, leading to partial accommodation in children (the ‘fast’ kind that is normally not corrected with glasses). In adults it is so slight that it can be ignored.
Can measurements be taken during cycloplegia?
Yes. It is better not to wait for the pupil to dilate completely in order to avoid the diameter of the pupil being excessive, leading to aberrations or preventing measurements from being taken.
What happens if the refractive defect is over +-7D?
The device will measure up to 15 Diopters, but in this case it will give only spherical equivalent.
The algorithm automatically decides which is the most reliable measurement to give. It may happen that measurement in range will result in n.a.. This means that the conditions of a good measurement are not reached.
How can one avoid the effect of accommodation?
Inside the instrument the patient can see 3 luminous dots. Ask the patient to look at these points.
Can the device be used with patients who wear glasses or contact lenses?
The patient’s contact lenses or glasses will not affect the measurement if they can fit the aperture.
Can children who suffer from nystagmus be measured?
Of course, as long as pupil movement is not excessive and the subject is not clearly cross-eyed.
Can children or adults affected by cataracts be measured?
Depending on the degree of opacity of the crystalline lens, the device may give a degree of reliability that is higher or lower, or may not give any result at all.
Can someone who is excessively cross-eyed be measured?
No. You must take monocular measurements, focusing one eye at a time and covering the other and by asking the patient to look towards the centre of the 2WIN-S.
Can measurements be taken in the case of loss of an eye?
Of course - in monocular mode.
Adaptica 2WIN-S brochure EN
Adaptica 2WIN-S brochure BR
Adaptica 2WIN-S brochure IT
Adaptica 2WIN-S brochure NGO EN
Adaptica 2WIN-S Opticians Brochure EN
Adaptica 2WIN-S Opticians Brochure IT
KALEIDOS App BT
AppConnection WiFi
2WIN-S SOFTWARE
Software Installation Instructions
2WIN-S OPERATOR MANUALS
Technical Bulletins
GDPR Compliance
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