Visual Acuity Charts Hack 2.8.3 + Redeem Codes
Developer: zijian huang
Category: Medical
Price: $3.99 (Download for free)
Version: 2.8.3
ID: com.fonlow.va
Screenshots
Description
Prevention is better than cure. Designed for children older than 6, parents with young children, and general practitioners, this app displays optically precise optotypes of eye charts for you to measure distant visual acuity accurately in order to detect nearsightedness or myopia early, so you can take preventive measures and seek help from medical professional early to prevent pseudomyopia from progressing to myopia, or prevent nearsightedness from getting worse.
Supported Eye Charts:
1. Snellen Chart, with C, D, E, F, H, K, N, P, R, U V and Z, as defined in BS 4274-1:2003
2. Tumbling E Chart. Option to have shorter middle arm.
3. Landolt C Chart
4. ETDRS Chart, with C, D, H, K, N, O, R, S, V, and Z
5. HOTV Chart
6. ETDRS European-wide Chart, with H, K, O, E, P, X, B, T, M and A
7. Numbers
Predefined Test Distances:
* 6, 5, 4, 3, and 2 meters
* 20, 15, 12, 10, 6 feet
Scenarios:
1. "Doctor" and "Patient".
2. Self-diagnosis with a mirror. With one eye covered by an eye patch and holding the device near the shoulder, you stand in front of a typical bathroom mirror using the mirror mode of the app and having the device's screen facing the mirror. The actual test distance is 2 times of the distance between you and the mirror.
3. Self-diagnosis with a Bluetooth keyboard. After putting the device standing a few meters away on a table, you use the keyboard's direction keys to indicate what your read.
4. Self-diagnosis within arm's reach.
Notations：
1. Decimal (0.50)
2. Fraction (20/40)
3. LogMAR (0.30)
4. Fraction (5/10)
5. Fraction (6/12)
6. MAR (2)
7. VAS or VAR (85)
Test Modes:
1. Auto-scoring
2. Manual
In Auto-scoring, the app calculates the score according to your swiping on the screen. For different types of eye charts, the swiping responding to the testee’s reading could be different. Please press the Question mark button on the screen for more details.
For LogMAR notation, the score is (LogMAR value of the best line read) + 0.02 x (number of optotypes missed). And the maximum missed is 3. For VAS notation, the score is an inversion of the logMAR scale, based on VAS=100-50xlogMAR. For other notations, the score is the notation value of the best line read and optionally minus number of optotypes missed, and the maximum missed is 2.
By default, setting "Play Interval Until Next Optotype" is none. Available intervals in second includes: 2, 4, 6, 8, and 10. If the "patient" could not recognize the optotype within the interval, this counts a miss.
Through enabling “Record Scores” in Settings, you can keep track of the progression of your visual acuity. Visual acuity scores of multiple testees could be recorded.
Visual Acuity Score (VAS) is an inversion of the logMAR scale, based on VAS=100-50xlogMAR. It is more intuitive since higher values indicate better visual acuity.
In the scores review, score 100 in blue indicates the reference standard, scores above 100 in green indicates no myopia, while scores below 100 in red may indicate myopia.
You may copy the scores of current testee to the device's clipboard, then you may paste the scores to a drafted Email message or instant message. This may be handy for telemedicine / telehealth session when the medical practitioner asks for VA scores.
Testing for myopia takes several procedures and the first step is often to check distant visual acuity through a visual acuity chart. And the decrement of visual acuity may indicate the development of myopia.
Disclaimer:
While this app may replace eye charts in print, however it cannot replace doctors and optometrists who carry out comprehensive tests for your eyes. Please visit optometrists regularly and seek help from medical professional at early signs of visual acuity problems.
Supported Eye Charts:
1. Snellen Chart, with C, D, E, F, H, K, N, P, R, U V and Z, as defined in BS 4274-1:2003
2. Tumbling E Chart. Option to have shorter middle arm.
3. Landolt C Chart
4. ETDRS Chart, with C, D, H, K, N, O, R, S, V, and Z
5. HOTV Chart
6. ETDRS European-wide Chart, with H, K, O, E, P, X, B, T, M and A
7. Numbers
Predefined Test Distances:
* 6, 5, 4, 3, and 2 meters
* 20, 15, 12, 10, 6 feet
Scenarios:
1. "Doctor" and "Patient".
2. Self-diagnosis with a mirror. With one eye covered by an eye patch and holding the device near the shoulder, you stand in front of a typical bathroom mirror using the mirror mode of the app and having the device's screen facing the mirror. The actual test distance is 2 times of the distance between you and the mirror.
3. Self-diagnosis with a Bluetooth keyboard. After putting the device standing a few meters away on a table, you use the keyboard's direction keys to indicate what your read.
4. Self-diagnosis within arm's reach.
Notations：
1. Decimal (0.50)
2. Fraction (20/40)
3. LogMAR (0.30)
4. Fraction (5/10)
5. Fraction (6/12)
6. MAR (2)
7. VAS or VAR (85)
Test Modes:
1. Auto-scoring
2. Manual
In Auto-scoring, the app calculates the score according to your swiping on the screen. For different types of eye charts, the swiping responding to the testee’s reading could be different. Please press the Question mark button on the screen for more details.
For LogMAR notation, the score is (LogMAR value of the best line read) + 0.02 x (number of optotypes missed). And the maximum missed is 3. For VAS notation, the score is an inversion of the logMAR scale, based on VAS=100-50xlogMAR. For other notations, the score is the notation value of the best line read and optionally minus number of optotypes missed, and the maximum missed is 2.
By default, setting "Play Interval Until Next Optotype" is none. Available intervals in second includes: 2, 4, 6, 8, and 10. If the "patient" could not recognize the optotype within the interval, this counts a miss.
Through enabling “Record Scores” in Settings, you can keep track of the progression of your visual acuity. Visual acuity scores of multiple testees could be recorded.
Visual Acuity Score (VAS) is an inversion of the logMAR scale, based on VAS=100-50xlogMAR. It is more intuitive since higher values indicate better visual acuity.
In the scores review, score 100 in blue indicates the reference standard, scores above 100 in green indicates no myopia, while scores below 100 in red may indicate myopia.
You may copy the scores of current testee to the device's clipboard, then you may paste the scores to a drafted Email message or instant message. This may be handy for telemedicine / telehealth session when the medical practitioner asks for VA scores.
Testing for myopia takes several procedures and the first step is often to check distant visual acuity through a visual acuity chart. And the decrement of visual acuity may indicate the development of myopia.
Disclaimer:
While this app may replace eye charts in print, however it cannot replace doctors and optometrists who carry out comprehensive tests for your eyes. Please visit optometrists regularly and seek help from medical professional at early signs of visual acuity problems.
Version history
2.8.3
2023-07-04
Fixed the scores screen in Dark Mode.
2.8.2
2022-09-20
1. Support iPhone 14, Plus, Pro and Pro Max.
2.8.1
2022-06-29
* Support iPhone SE 3rd Generation and iPad Air 5th Generation.
2.8
2021-10-26
1. Setting for displaying multiple optotypes of current row.
2. When multiple optotypes are enabled in current row, wipe left or right or press the Next button to shuffle optotypes.
3. In Auto Scoring mode, the testee should read the central optotype.
4. Supports iPad 9th generation and iPad Mini 6th generation.
2. When multiple optotypes are enabled in current row, wipe left or right or press the Next button to shuffle optotypes.
3. In Auto Scoring mode, the testee should read the central optotype.
4. Supports iPad 9th generation and iPad Mini 6th generation.
2.7.1
2021-09-20
1. Support iPhone 13 series.
2. Support iPad Pro (11-inch) 3rd generation and iPad Pro (12.9-inch) 5th generation.
2. Support iPad Pro (11-inch) 3rd generation and iPad Pro (12.9-inch) 5th generation.
2.7
2021-04-30
* When Record Scores is enabled in Settings, in the Visual Acuity Scores screen you may copy the scores of current patient to clipboard, then you may paste the scores to a drafted Email message or instant message. This may be handy for a telemedicine / telehealth session when the medical practitioner asks for VA scores.
* The Visual Acuity Scores screen has help content available.
* The Visual Acuity Scores screen has help content available.
2.6.1
2021-01-15
1. Randomize the sequences of optotypes before each test with autoplay, in case that the next test subject may memorize the sequences, while the app randomizes the sequences during startup.
2.6
2020-10-26
1. Support iPhone 12, iPad 8, iPad Pro 4, and iPad Air 4.
2. Obtain supports for new iPhone or iPad models through calling home service, if the app is not updated.
2. Obtain supports for new iPhone or iPad models through calling home service, if the app is not updated.
2.5.2
2020-05-16
1. Bug fixed: The eyesight testing screens do not respond to swipe gestures on iPhone/iPad with iOS 13.4.1.
2.5.1
2020-05-04
1. Bug fixed: on iPhone when inputting Custom Distance, the value is not persisted.
2. Better display in iOS Dark Appearance.
2. Better display in iOS Dark Appearance.
2.5
2020-04-28
1. Support iPhone SE 2nd Generation.
2. For the latest models of iPhone or iPad which this app hasn't yet supported, you may be prompted to input PPI according to the technical specification of your iPhone or iPad.
3. If Tumbling E Chart is the current chart, you may choose E with shorter middle arm through Settings.
2. For the latest models of iPhone or iPad which this app hasn't yet supported, you may be prompted to input PPI according to the technical specification of your iPhone or iPad.
3. If Tumbling E Chart is the current chart, you may choose E with shorter middle arm through Settings.
2.3
2020-04-05
1. Option for optotype E of Tumbling E Chart to have shorter middle arm.
2. Startup notation at Decimal 0.2 or LogMar0.7 or VAS 65 or Fraction 6/30.
3. Support iPad Pro 12.9-inch 4th generation, iPad Pro 11-inch 2nd generation and iPad 10.2 inch 7th generation.
2. Startup notation at Decimal 0.2 or LogMar0.7 or VAS 65 or Fraction 6/30.
3. Support iPad Pro 12.9-inch 4th generation, iPad Pro 11-inch 2nd generation and iPad 10.2 inch 7th generation.
2.2.5
2020-04-02
Maintenance build.
2.2.3
2019-09-24
Support iPhone 11.
2.2.2
2019-08-14
1. On iPad, if "Record Scores" is enabled, the Scores button will appear in the toolbar, while on iPhone, a menu button appears in the toolbar for Scores, Settings and About.
2. Faster startup.
2. Faster startup.
2.2.1
2019-07-09
1. Support latest iPad models released in 2019.
2.2
2019-05-17
1. Support self-diagnosis with a Bluetooth keyboard. With eye charts that use letters or numbers, you may press the respective letter keys or number keys to signal right responses. With Tumbling E Chart and Landolt C Chart, you may use arrow keys or QWEADZXC of the QWERTY keyboard layout to signal right responses, similar to the way of swiping the screen.
2. The textual content of this app had been translated into these languages from English:
Spanish/Español (es)
Italian/Italiano (it)
Russian/русский (ru)
Hindi/हिन्दी, हिंदी, (hi)
Portuguese/Português (pt)
Chinese Simplified/简体中文 (zh-Hans)
Chinese Traditional/繁體中文 (zh-Hant)
Japanese/日本語 (ja)
Korean/한국어 (ko)
Thai/ไทย (th)
Indonesian/bahasa Indonesia (id)
2. The textual content of this app had been translated into these languages from English:
Spanish/Español (es)
Italian/Italiano (it)
Russian/русский (ru)
Hindi/हिन्दी, हिंदी, (hi)
Portuguese/Português (pt)
Chinese Simplified/简体中文 (zh-Hans)
Chinese Traditional/繁體中文 (zh-Hant)
Japanese/日本語 (ja)
Korean/한국어 (ko)
Thai/ไทย (th)
Indonesian/bahasa Indonesia (id)
2.1.1
2019-04-18
Bug fixed: After the app falls into sleep then wakes up, the help content in the default screen may become for Autoplay.
2.1
2019-04-15
Improved the hint and help system.
2.0.1
2019-04-04
1. Bug fixed: date in the scores was displayed as UTC date. It should be local date.
2. Through enabling “Record Scores” in Settings, you can keep track of the progression of your visual acuity. Visual acuity scores of multiple testees could be recorded. Visual Acuity Score (VAS) is an inversion of the logMAR scale, based on VAS=100-50xlogMAR. It is more intuitive since higher values indicate better visual acuity.
3. In the scores review, score 100 in blue indicates the reference standard, scores above 100 in green indicates no myopia, while scores below 100 in red may indicate myopia.
2. Through enabling “Record Scores” in Settings, you can keep track of the progression of your visual acuity. Visual acuity scores of multiple testees could be recorded. Visual Acuity Score (VAS) is an inversion of the logMAR scale, based on VAS=100-50xlogMAR. It is more intuitive since higher values indicate better visual acuity.
3. In the scores review, score 100 in blue indicates the reference standard, scores above 100 in green indicates no myopia, while scores below 100 in red may indicate myopia.
2.0
2019-03-31
Through enabling “Record Scores” in Settings, you can keep track of the progression of your visual acuity. Visual acuity scores of multiple testees could be recorded. Visual Acuity Score (VAS) is an inversion of the logMAR scale, based on VAS=100-50xlogMAR. It is more intuitive since higher values indicate better visual acuity.
In the scores review, score 100 in blue indicates the reference standard, scores above 100 in green indicates no myopia, while scores below 100 in red may indicate myopia.
In the scores review, score 100 in blue indicates the reference standard, scores above 100 in green indicates no myopia, while scores below 100 in red may indicate myopia.
1.5
2019-03-07
1. Short haptics vibration (for iPhone 6s or above) or short notification sound when current optotype is changed successfully, if the voice hint is off. This gives you feedback if you as a "doctor" is not looking at the screen but the response from the "patient".
1.3.4
2019-01-28
1. With notation VAS, the score is calculated as 100 - 50 x logMAR.
2. The app has its own optional brightness setting independent of the device's brightness setting. When a chart is viewed from a distance over 2 meters, it is reasonable to make the brightness of the app screen be brighter than the default device brightness which is generally for arm's reach distance.
2. The app has its own optional brightness setting independent of the device's brightness setting. When a chart is viewed from a distance over 2 meters, it is reasonable to make the brightness of the app screen be brighter than the default device brightness which is generally for arm's reach distance.
1.3.1
2019-01-05
Support more VA notations: Fraction (5/10) based on 5 meters. MAR and VAS/VAR.
1.3
2018-12-20
1. Setting to disable "Keep Screen On". By default, the app keeps screen on.
2. When using LogMAR notation, the scoring is (LogMAR value of the best line read) + 0.02 x (number of optotypes missed). LogMAR chart was developed at the National Vision Research Institute of Australia in 1976. In this app, a EDTRS chart with LogMAR notation is becoming a LogMAR chart.
2. When using LogMAR notation, the scoring is (LogMAR value of the best line read) + 0.02 x (number of optotypes missed). LogMAR chart was developed at the National Vision Research Institute of Australia in 1976. In this app, a EDTRS chart with LogMAR notation is becoming a LogMAR chart.
Ways to hack Visual Acuity Charts
- Redeem codes (Get the Redeem codes)
Download hacked APK
Download Visual Acuity Charts MOD APK
Request a Hack
Ratings
3.5 out of 5
30 Ratings
Reviews
WilliamsPiggy,
Better than Snellen chart on paper
I have been wondering how come the top row of the Snellen chart could be suitable for both 20 feet and 6 meters, as marked in paper base Snellen charts, since 20 feet is 6.096 meters. This app actually gives slightly larger optotype for a 20 feet distance than for a 6 meters distance.
The UI design is mobile friendly. The hint is brief, so it took me some fail and try to figure out how to use. After all, intuitive and smooth.
The UI design is mobile friendly. The hint is brief, so it took me some fail and try to figure out how to use. After all, intuitive and smooth.
Reviewforyou*,
Shame on you for profiteering during COVID pandemic!
Profiteering during this crisis when people and companies should be trying to help is unconscionable. Many families are unemployed due to the COVID pandemic and cannot afford to spend valuable resources on an app at this time. Be part of the solution, not the problem at this difficult time. Shame on you! This app was free until just a few days ago. During this COVID crisis, most eye care providers are resorting to telemedicine to monitor patients who need to be followed. This app is useful for visual acuity testing, especially in children, since it includes the Lea and HOTV charts and could be very helpful in the setting of telemedicine. It had been a free app until just a few days ago, when all of a sudden, in the midst of the COVID-19 pandemic, a $4.99 fee was charged. This fee should be removed or at least waived at this time—just as quickly as it was added!
Alibado,
Decent design for smart phone users
I tried a few eye chart apps however, most are just replicates of paper based eye charts. This one utilizes advantages of iPhone, delivering pretty user experiences while maintaining accuracy of detecting near-sightedness.
A-Aron2020,
This was free - now it’s not.
Update #2: Why are you reporting my concern to Apple support? My issue is NOT about MY purchase experience. My issue is about the many other patients who will need this app in the near future. Give THEM a break. Reduce the price for THEM. HELP THEM, not me.
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Update: If it was just a temporary 1 week free trial, why not extend that for several more weeks to help people out? Or maybe reduce the price to $0.99? Seems like that would be reasonable if you are restricted from changing it to free.
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Hundreds of patients will now suffer as they can’t afford spending money on a single visual acuity check. Shame on the developer for taking advantage of the disadvantaged. Hold down on the comment and like it so it rises to the top of most helpful. Time to look for another option.
================
Update: If it was just a temporary 1 week free trial, why not extend that for several more weeks to help people out? Or maybe reduce the price to $0.99? Seems like that would be reasonable if you are restricted from changing it to free.
================
Hundreds of patients will now suffer as they can’t afford spending money on a single visual acuity check. Shame on the developer for taking advantage of the disadvantaged. Hold down on the comment and like it so it rises to the top of most helpful. Time to look for another option.
Potter Taken,
So far so good
At least I am almost certain that my boy is not having myopia for now after staying indoor for weeks. Nevertheless, it is still worth of visiting a local optometrist later.
Manimany2,
Updated
Some other apps work with only old iPhones, and this one works with the latest ones.
冚家富貴,
missing english units
I rarely use metric. It would be great if I were able to switch units to english. Thanks
Sandylong99,
It looks promising
Is it possible to have multiple letters in one line for testing lazy eyes?
lon way,
convenient and accurate.
convenient and accurate. At least in iPhone XS Max, the letters displayed are precise as I had measured with a ruler.
D0c-@1,
In times of need
It’s great you had a promotion for one week. Considering your app is being recognised as well developed maybe you could consider its price during the crisis period as some patients can’t afford $5
