Frequently Asked Questions
What is the GlassesOn app?

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

Is GlassesOn a medical device?

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.

How accurate is your measurement?
  • Retrieved prescription details are accurate within a range of +/- 0.25 diopters.
  • Pupillary distance (PD) measurement is proven accurate within a +/- 1 mm.
Is your test a full eye exam?

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.

How frequently should I receive an in-person eye health exam?

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.

Who can use the GlassesOn app?

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)

I got an ‘out of range’ message. What does it mean?

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.
What should I do now, if I got an out-of-range message?

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.

What is a PD number?

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.

Do I need anything special to use the GlassesOn app?

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

What devices does GlassesOn support?

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:

Asus Zenfone Max (M1) ZB555KL
Asus Zenfone Max (M2) ZB633KL
Asus Zenfone Max Pro (M1) ZB601KL/ZB602K
Coolpad Note 5
Gionee A1
Gionee P7
HTC 10
Infinix Zero 5
InFocus Turbo 5
Lava Z81
LeEco Le 1s (Eco)
Lenovo K5 Note (Lenovo Vibe K5 Note Pro)
Lenovo K6 Power
Lenovo ZUK Z2 (Z2 Plus)
Meizu 16S (China)
Meizu 16Xs (China)
Meizu 6T (China)
Meizu Note 9 (China)
Meizu S6 (China)
Motorola Moto E3 Power
Motorola Moto G5S Plus
Motorola Moto G6 (Motorola Moto 1S)
Motorola Moto M
Motorola One Power (P30 Note)
Nexus 5X
Nexus 5
Pixel 2
Pixel 2 XL
Pixel 3
Pixel
Pixel XL
Nokia 3.1 Plus
Nokia 5.1 Plus (Nokia X5)
Nokia 6.1
Nokia 6
OnePlus 3/3T
OnePlus 5
OnePlus 5t
OnePlus 6
OnePlus 6T
OnePlus 7 Pro
OnePlus 7
OnePlus One
Realme 3 Pro (Realme X Lite)
Realme U1
Tecno Camon IN5
TECNO CAMON I2X
Xiaomi Mi 9 Transparent Edition (China)
Xiaomi Mi 8 SE (China)
Xiaomi Mi 8 (China)
Xiaomi Mi 9 SE (China)
Xiaomi Mi A1
Xiaomi Mi A2 Lite (Redmi 6 Pro)
Xiaomi Mi A2
Xiaomi Mi CC9 (China)
Xiaomi Mi CC9e (China)
Xiaomi Mi Max 3 (China)
Xiaomi Mi Max
Xiaomi Mi Mix 2S (China)
Xiaomi Mi Mix 3 (China)
Xiaomi Mi Note 3 (China)
Xiaomi Pocophone F1
Xiaomi Redmi 6A
Xiaomi Redmi 6 (China)
Xiaomi Redmi 7 (China)
Xiaomi Redmi K20 (China)
Xiaomi Redmi Note 3 (Redmi Note 3 Pro)
Xiaomi Redmi Note 4 (Redmi Note 4x)
Xiaomi Redmi Note 5 Pro
Xiaomi Redmi Note 5 (Redmi 5 Plus)
Xiaomi Redmi Note 6 Pro
Xiaomi Redmi Note 7S
Xiaomi Redmi Note 7 Pro
Xiaomi Redmi Note 7
Xiaomi Redmi Y2
New iPad 9.7
New iPad 9.7
iPad-Mini 2
iPad-Mini 2
iPad-Mini 4
iPad-Mini 4
iPad (Default)
iPhone 5S
iPhone 5
iPhone 6 Plus
iPhone 6S Plus
iPhone 6S
iPhone 6S
iPhone 6
iPhone 7Plus
iPhone 7Plus
iPhone 7
iPhone 8Plus
iPhone 8
iPhone 8
iPhone SE
iPhone SE
iPhone XR
iPhone XS Max
iPhone XS
iPhone X
Huawei Enjoy 8 (China)
Huawei Enjoy 8e (China)
Huawei Enjoy 9 (China)
Huawei Enjoy 9e (China)
Huawei Enjoy Max (China)
Huawei Honor 10 Lite
Huawei Honor 10
Huawei Honor 20 (China)
Huawei Honor 20i (China)
Huawei Honor 6X (Huawei Mate 9 Lite) (Huawei GR5 2017)
Huawei Honor 7X
Huawei Honor 8C (Huawei Play 8C China)
Huawei Honor 8X (China)
Huawei Honor 8X (Honor View 10 Lite)
Huawei Honor 8
Huawei Honor 8X Max
Huawei Honor 9N (Honor 9i)
Huawei Honor 9 Lite (Honor 9 Youth Edition)
Huawei Honor Magic 2
Huawei Honor Play 8A
Huawei Honor Play
Huawei Honor View 20 (V20 China)
Huawei Mate 10 Lite (Nova 2i) (Maimang 6) (Honor 9i) (Huawei G10)
Huawei Mate 10 Pro
Huawei Mate 10
Huawei Mate 20 Pro
Huawei Mate 20
Huawei Mate 9
Huawei Nova 2S (China)
Huawei Nova 3
Huawei Nova 4
Huawei Nova 4e
Huawei Nova 5i
Huawei Nova
Huawei Nova 5 Pro
Huawei P10 Lite
Huawei P10
Huawei P20 Pro
Huawei P30 Pro
Huawei P30
Huawei P9
Huawei P Smart 2019
Huawei Y7 Prime (2019) (China)
Huawei Y9 (Enjoy 8 Plus China) (2018)
Huawei Y9 (Huawei Enjoy 9 Plus China) (2019)
LG G3
LG G4
LG G5 SE
LG G5
LG G6
LG K10 (2017)
Oppo A3
Oppo A57 (Oppo F3 Lite)
Oppo A71
Oppo A83
Oppo A9X (China)
Oppo A9
Oppo F11 Pro
Oppo F3
Oppo F5 (Oppo F5 Plus)
Oppo F5 Youth (Oppo A73)
Oppo F7
Oppo F7 Youth
Oppo F9 (F9 Pro)
Oppo R11 (China)
Oppo R11 Plus (China)
Oppo R15x (China)
Oppo R17
Oppo Reno
Oppo Reno Z
Samsung Galaxy A30 (2019)
Samsung Galaxy A50 (2019)
Samsung Galaxy A5 (2017)
Samsung Galaxy A60 (2019)
Samsung Galaxy A6+ (Galaxy A9 Star) (Galaxy Jean) (2018)
Samsung Galaxy A6s (2018)
Samsung Galaxy A7 (2018)
Samsung Galaxy A8 (2018)
Samsung Galaxy A8s (Galaxy A9 Pro) (2018)
Samsung Galaxy J4+ (2018)
Samsung Galaxy J5 (2015)
Samsung Galaxy J7 Pro (2017)
Samsung Galaxy J7 Max (2017)
Samsung Galaxy J7 Prime (2016)
Samsung Galaxy J8 (Samsung Galaxy On8) (2018)
Samsung Galaxy Note 4 (2014)
Samsung Galaxy Note5 (2015)
Samsung Galaxy Note8 (2017)
Samsung Galaxy Note9 (2018)
Samsung Galaxy On7 (2015)
Samsung Galaxy S10 (2019)
Samsung Galaxy S10 Plus (2019)
Samsung Galaxy S5 (2014)
Samsung Galaxy S6 (2015)
Samsung Galaxy S6 Active (2015)
Samsung Galaxy S6 Edge Plus (2015)
Samsung Galaxy S6 Edge (2015)
Samsung Galaxy S7 (2016)
Samsung Galaxy S7 Active (2016)
Samsung Galaxy S7 Edge (2016)
Samsung Galaxy S8 (2017)
Samsung Galaxy S8 Active (2017)
Samsung Galaxy S8 Plus (2017)
Samsung Galaxy S9 (2018)
Samsung Galaxy S9 Plus (2018)
Vivo IQ00 (China)
Vivo S1 (China)
Vivo S1 Pro (China)
Vivo V11 (V11 Pro) (Vivo X21s)
Vivo V11i (Vivo V11)
Vivo V15 Pro
Vivo V15
Vivo V5 Lite (vivo Y66)
Vivo V5
Vivo V9 Pro
Vivo V9
Vivo V9 Youth (Vivo Y85 China)
Vivo X20A (China)
Vivo X23 Symphony (China)
Vivo X27 (China)
Vivo X9 Plus (China)
Vivo X9s (China)
Vivo Y17 (Vivo Y3 China)
Vivo Y81
Vivo Y81s (China)
Vivo Y83 Pro
Vivo Y83
Vivo Y91 (Y91i) (Y91c)
Vivo Y93 (China)
Vivo Y93
Vivo Y93s (China)
Vivo Y95 (Vivo U1)
Vivo Y97 (Vivo Z3i China)
Vivo Z3x (China)
Vivo Z5x

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

What happens to the photos you record during the test?

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.

How much does it cost to use GlassesOn?

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

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