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
Asus Zenfone Max M2
Asus Zenfone Max Pro M1
Asus Zenfone Max Pro M2 (india)
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 Z5
Lenovo ZUK Z2 (Z2 Plus)
Meitu T9 (China)
Meizu 16S (China)
Meizu 16Xs (China)
Meizu 16 (China)
Meizu 6T (China)
Meizu Note 9 (China)
Meizu Pro 6 Plus (China)
Meizu S6 (China)
Motorola Moto E3 Power
Motorola Moto G5S Plus
Motorola Moto G6 (Motorola Moto 1S)
Motorola Moto M
Motorola One Action
Motorola One Power (P30 Note)
Nexus 5X
Nexus 5
Pixel 2
Pixel 2 XL
Pixel 3a
Pixel 3a XL
Pixel 3
Pixel 3 XL
Pixel 4
Pixel 4 XL
Pixel XL
Nokia 3.1 Plus
Nokia 5.1 Plus (Nokia X5)
Nokia 6.1 Plus (india)
Nokia 6.1
Nokia 6
Nokia 8
Nokia X6 (China)
OnePlus 3/3T
OnePlus 5
OnePlus 5t
OnePlus 6
OnePlus 6T
OnePlus 7 Pro / OnePlus 7T
OnePlus 7
OnePlus One
Realme 2 Pro (india)
Realme 3 Pro (Realme X Lite)
Realme 3 (india)
Realme 5 Pro (india)
Realme U1
Realme X2 Pro (india)
Realme X2 (india)
Realme X (india)
Smartisan JianGuo Pro 2 (China)
Smartisan M1L (China)
Smartisan Nut 3 (China)
Smartisan Nut Pro 2s (China)
Smartisan Nut Pro 2 (China)
Smartisan R1 (China)
Tecno Camon IN5
Xiaomi Mi 9 Transparent Edition (China)
Xiaomi Mi 10 (China)
Xiaomi Mi 10 Pro (China)
Xiaomi Mi 5S (China)
Xiaomi Mi 5X (China)
Xiaomi Mi 6X (China)
Xiaomi Mi 6 (China)
Xiaomi Mi 8 SE (China)
Xiaomi Mi 8 (China)
Xiaomi Mi 8 Lite (China)
Xiaomi Mi 8 UD (China)
Xiaomi Mi 9T
Xiaomi Mi 9 (China)
Xiaomi Mi 9 Pro 5G
Xiaomi Mi 9 SE (China)
Xiaomi Mi A1
Xiaomi Mi A2 Lite (Redmi 6 Pro)
Xiaomi Mi A2
Xiaomi Mi A3
Xiaomi Mi CC9 (China)
Xiaomi Mi CC9 Pro (China)
Xiaomi Mi CC9e (China)
Xiaomi Mi Max 3 (China)
Xiaomi Mi Max
Xiaomi Mi Mix 2S (China)
Xiaomi Mi Mix 2 (China)
Xiaomi Mi Mix 3 (China)
Xiaomi Mi Note 3 (China)
Xiaomi Mi Play (China)
Xiaomi Pocophone F1
Xiaomi Redmi 6A
Xiaomi Redmi 6 (China)
Xiaomi Redmi 7A (China)
Xiaomi Redmi 7 (China)
Xiaomi Redmi 7
Xiaomi Redmi 8 (China)
Xiaomi Redmi K20 (China)
Xiaomi Redmi K20 Pro (China)
Xiaomi Redmi K30 5G (China)
Xiaomi Redmi K30 Pro (China)
Xiaomi Redmi K30 Pro Zoom Edition (China)
Xiaomi Redmi Note 3 (Redmi Note 3 Pro)
Xiaomi Redmi Note 4 (Redmi Note 4x)
Xiaomi Redmi Note 5A
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 Note 8 Pro (China)
Xiaomi Redmi Note 8 (india)
Xiaomi Redmi S2 (China)
Xiaomi Redmi Y2
ZTE Axon 10 Pro (China)
New iPad 9.7
New iPad 9.7
iPad-Mini 2
iPad-Mini 2
iPad-Mini 4
iPad-Mini 4
iPad (Default)
iPad Pro 12.9
iPhone 11 Pro/Max
iPhone 11
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 2nd Gen
iPhone SE 2nd Gen
iPhone SE
iPhone SE
iPhone XR
iPhone XS Max
iPhone XS
iPhone X
Huawei Enjoy 10
Huawei Enjoy 10e (Share 10e)
Huawei Enjoy 10s (Share 10s)
Huawei Enjoy 8 (China)
Huawei Enjoy 8e (China)
Huawei Enjoy 9 (China)
Huawei Enjoy 9e (China)
Huawei Honor 10 Lite
Huawei Honor 10
Huawei Honor 20S
Huawei Honor 20 Pro
Huawei Honor 20
Huawei Honor 20 lite (China)
Huawei Honor 20i
Huawei Honor 30S
Huawei Honor 30 Pro
Huawei Honor 30
Huawei Honor 6X (Huawei Mate 9 Lite) (Huawei GR5 2017)
Huawei Honor 7A
Huawei Honor 7C
Huawei Honor 7S (Honor Play 7 China)
Huawei Honor 7X
Huawei Honor 8C (Huawei Play 8C China)
Huawei Honor 8S 2020 (China)
Huawei Honor 8X (China)
Huawei Honor 8X (Honor View 10 Lite)
Huawei Honor 8
Huawei Honor 8X Max
Huawei Honor 9A Play
Huawei Honor 9N (Honor 9i)
Huawei Honor 9X Pro (China)
Huawei Honor 9X
Huawei Honor 9 Lite (Honor 9 Youth Edition)
Huawei Honor 9
Huawei Honor Magic 2
Huawei Honor Note 10
Huawei Honor Play 3 (China)
Huawei Honor Play 8A
Huawei Honor Play
Huawei Honor V30 Pro
Huawei Honor V30 (Honor View 30)
Huawei Honor V9 (China)
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 20X
Huawei Mate 20 Lite
Huawei Mate 20 Pro
Huawei Mate 20
Huawei Mate 30 5G
Huawei Mate 30 Pro 5G
Huawei Mate 30 Pro
Huawei Mate 30
Huawei Mate 9
Huawei Nova 2S (China)
Huawei Nova 3
Huawei Nova 4
Huawei Nova 4e
Huawei Nova 5
Huawei Nova 5i Pro
Huawei Nova 5i
Huawei nova 6 5G
Huawei nova 6 SE (nova 6 SE 5G)
Huawei nova 7 5G
Huawei nova 7 Pro 5G
Huawei nova 7 SE (nova 7 SE 5G)
Huawei Nova
Huawei Nova 5 Pro
Huawei P10 Lite
Huawei P10
Huawei P20 Lite
Huawei P20 Pro
Huawei P20
Huawei P30 Lite
Huawei P30 Pro
Huawei P30
Huawei P40 Pro
Huawei P40
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)
Huawei Y Max
LG K10 (2017)
Oppo A11
Oppo A3
Oppo A57 (Oppo F3 Lite)
Oppo A71
Oppo A73 (China)
Oppo A73t (China)
Oppo A77 (China)
Oppo A7X (China)
Oppo A83 (China)
Oppo A83
Oppo A8
Oppo A91
Oppo A9X (China)
Oppo A9 2020
Oppo A9
Oppo Ace 2
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 Find X2
Oppo Find X
Oppo K1
Oppo K3 (China)
Oppo K5 (China)
Oppo R11 (China)
Oppo R11 Plus (China)
Oppo R11s Plus (China)
Oppo R15 Pro
Oppo R15
Oppo R15x
Oppo R17
Oppo RX17 Pro (Oppo R17 Pro)
Oppo Reno 2
Oppo Reno 3 Pro 5G
Oppo Reno 3
Oppo Reno
Oppo Reno Z
Samsung Galaxy A10 (2019)
Samsung Galaxy A20 (2019)
Samsung Galaxy A30 (2019)
Samsung Galaxy A30s (2019)
Samsung Galaxy A50 (2019)
Samsung Galaxy A50s (2019)
Samsung Galaxy A5 (2017)
Samsung Galaxy A60 (2019)
Samsung Galaxy A6+ (Galaxy A9 Star) (Galaxy Jean) (2018)
Samsung Galaxy A6s (2018)
Samsung Galaxy A70 (2019)
Samsung Galaxy A71 5G (2020)
Samsung Galaxy A7 (2017)
Samsung Galaxy A7 (2018)
Samsung Galaxy A8 (2018)
Samsung Galaxy A8s (Galaxy A9 Pro) (2018)
Samsung Galaxy A90 5G (2019)
Samsung Galaxy A9 (2018)
Samsung Galaxy J4+ (2018)
Samsung Galaxy J5 (2015)
Samsung Galaxy J6 Plus (2018)
Samsung Galaxy J7 Pro (2017)
Samsung Galaxy J7 Max (2017)
Samsung Galaxy J7 Prime (2016)
Samsung Galaxy J8 (Samsung Galaxy On8) (2018)
Samsung Galaxy M30s (2019)
Samsung Galaxy Note 10 (2019)
Samsung Galaxy Note 10+ (2019)
Samsung Galaxy Note 10+ 5G (2019)
Samsung Galaxy Note 4 (2014)
Samsung Galaxy Note5 (2015)
Samsung Galaxy Note8 (2017)
Samsung Galaxy Note9 (2018)
Samsung Galaxy On7 (2015)
Samsung Galaxy S10 (5G) (2019)
Samsung Galaxy S10 Plus (2019)
Samsung Galaxy S10e (2019)
Samsung Galaxy S20 5G (2020)
Samsung Galaxy S20+ (2020)
Samsung Galaxy S20+ 5G (2020)
Samsung Galaxy S20 Ultra 5G (2020)
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)
Samsung Galaxy Z Flip (2020)
Vivo IQOO Neo 855
Vivo IQOO Neo
Vivo IQOO Pro 5G
Vivo NEX 3 5G
Vivo NEX A (China)
Vivo NEX (China)
Vivo NEX S (China)
Vivo S1 (China)
Vivo S1 Pro (China)
Vivo S1 (india)
Vivo S5
Vivo V11 (V11 Pro) (Vivo X21s)
Vivo V11i (Vivo V11)
Vivo V15 Pro
Vivo V15
Vivo V17 (india)
Vivo V5 Lite (vivo Y66)
Vivo V5
Vivo V9 Pro
Vivo V9
Vivo V9 Youth (Vivo Y85 China)
Vivo X20A (China)
Vivo X20 Plus A (China)
Vivo X21 A (China)
Vivo X23 Symphony (China)
Vivo X27 (China)
Vivo X27 Pro
Vivo X9L (China)
Vivo X9S (China)
Vivo X9 (China)
Vivo X9 Plus (China)
Vivo X9 Plus L (China)
Vivo X9s Plus L (China)
Vivo Y17 (Vivo Y3 China)
Vivo Y50 (China)
Vivo Y5s
Vivo Y73 (China)
Vivo Y7s (China)
Vivo Y81
Vivo Y81s (China)
Vivo Y83 (China)
Vivo Y83 Pro
Vivo Y83
Vivo Y85A (China)
Vivo Y91 (Y91i) (Y91c)
Vivo Y93 (China)
Vivo Y93
Vivo Y93s (China)
Vivo Y95 (Vivo U1)
Vivo Y97 (Vivo Z3i China)
Vivo Z1 (China)
Vivo Z1 Pro (india)
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.