GlassesOn is a suite of optometry tools within a mobile application, developed by 6over6 on its mission to make vision care more accessible worldwide.

GlassesOn is registered as a Class 1 Exempt Medical Device on the FDA Medical Device Listings. However, GlassesOn does not provide medical advice, and the information it provides is for educational and informational benefit, and should not be considered a substitute for professional medical advice.

6over6 encourages you to share any information generated by the use of GlassesOn with your treating health care provider.

• Retrieved prescription details are accurate within a range of +/- 0.25 diopters.
• Pupillary distance (PD) measurement is proven accurate within a +/- 1 mm.

No. While GlassesOn retrieves your glasses prescription and measures the distance between your pupils, there is much more to your eye health than that.

During a comprehensive eye exam, your doctor will also check your eyes for common eye diseases, and will evaluate your eyes as an indicator of your overall health.

Often, eye doctors are the first health care professionals to detect chronic systemic diseases such as high blood pressure and diabetes. Therefore, using GlassesOn does not replace regular visits to your eye doctor.

The American Academy of Ophthalmology (AAO) has published official recommendations for eye health exam frequency. You should refer to their recommendations to inform your own decision.

Note: please read our Terms of Use carefully. It includes, amongst other information, a detailed list of conditions and illnesses that prohibit the use of GlassesOn.

You may use GlassesOn app if you:

• are a healthy individual, 18 or older
• have stable vision, and are happy with your current prescription
• have a single vision prescription between -6.00 and +3.00
• have a cylinder measurement lower than -2.50

You should not use GlassesOn app if you:

• have a progressive, multifocal, or bifocal prescriptions
• have a prescriptions that include a prism measurement
• have a high single vision distance, reading, and/or astigmatism powers
• take any medication that affects your vision
• have any illness or condition that affects ocular health (ask your doctor)

An ‘out of range’ message means that, while we were able to measure your glasses parameters, the results fall outside of the ‘testable range’. This may be because of several reasons:

• High-minus lenses, high-cylinder lenses and high-plus lenses: we have decided to limit our results the supported range because our main concern is the health of our users. The app is quite accurate for a wider range of optical lenses, but high power prescriptions may indicate health concerns such as retinal detachment or keratoconus, and therefore it is advisable to consult an eye care professional.
• Low-sphere / high-cylinder lenses: in this unique case, our scan cannot identify the cylinder axis at a high enough accuracy level. Therefore such lenses fall outside of the testable range.

You will need to make an appointment with your vision care provider in order to get your prescription details, like you have done in the past.

The PD, or Pupillary Distance, is the distance (in millimeters) between your pupils. This measurement is important for your glasses providers, as it is used to fit your glasses to your eyes. The distance between the optical centers of your lenses should be the same as the distance between your pupils.

All you need is a smartphone, a magnetic card and a computer (desktop or laptop) with a 12” screen or larger.

To provide accurate results, we test different mobile device models in our labs before we officially ‘support’ them. Currently, our list of supported models include the following:

If your phone model is not on this list and you’d like to see it bumped up the queue, please let us know.

The photos from the test are are used in real time by our algorithm to retrieve your glasses prescription and your PD, and are stored anonymously in our logs. No personally identifiable information is saved on our servers. You can learn more by reading our privacy policy.

GlassesOn is currently completely FREE to use – compare this to the typical $100 to $250 cost of an office visit.