About Visual Acuity Charts
Check and track distant vision to find early sign or progression of myopia. Prevention is better than cure. Designed for children older than 6, parents with young children, and general practitioners, this eyechart app...
Check and track distant vision to find early sign or progression of myopia. Prevention is better than cure.
Designed for children older than 6, parents with young children, and general practitioners, this eyechart app displays optically precise optotypes of eye charts for you to measure distance vision accurately in order to detect 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, with C, D, E, F, H, K, N, P, R, U V and Z, as defined in BS 4274-1:2003.
2. Tumbling E. Option to have shorter middle arm.
3. Landolt C.
4. ETDRS, with C, D, H, K, N, O, R, S, V, and Z.
5. European-wide, with H, K, O, E, P, X, B, T, M and A.
6. HOTV.
7. Numbers.
8. Shapes.
Test Distances:
* 6, 5, 4, 3, and 2 meters predefined
* 20, 15, 12, 10, 6 feet predefined
* Custom distance 0.5 - 30 meters, or 1.6 - 98 ft.
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.
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. Manual.
2. Auto scoring In Auto scoring, you use the swiping gestures to indicate correct readings or wrong readings, and the app calculates the score. 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 Testing for Telehealth Using Mobile Applications” published in JAMA Ophthalmology on https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7809609/ indicates Visual Acuity Charts is the most accurate among 10 apps on iPhones being tested.
Checking for myopia takes several procedures and the first step is often to test 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 eye exam for your basic eye health. The eye chart app does not test strabismus, esotropia, exotropia, hyperopia and astigmatism and which are common early vision conditions. Please visit optometrists regularly and seek help from medical professional at early signs of visual acuity problems.
Previous Versions
Here you can find the changelog of Visual Acuity Charts since it was posted on our website on 2020-11-17 08:52:41.
The latest version is 3.1.1 and it was updated on 2024-04-19 17:30:42. See below the changes in each version.
Visual Acuity Charts version 3.1.1
Updated At: 2024-01-31
Changes: Privacy Policy link available in the About screen.
Visual Acuity Charts version 3.1
Updated At: 2023-12-12
Changes: 1. Display details of scores.
2. Display and share trend of visual acuity.
3. Share all scores as CSV file.
Visual Acuity Charts version 3.0
Updated At: 2023-10-06
Changes: Share the test results of autoscoring with other apps like:
1. Messages/SMS
2. Email apps like Gmail
3. Instant messengers like WhatsApp, Signal, and Skype etc.
4. Cloud storages like Google Drive
5. Clipboard
6. Any app that can receive text, HTML file or JSON file from the other apps.
You may use such features to send the test results to medical professionals during a telemedicine session.
Visual Acuity Charts version 2.9
Updated At: 2023-09-27
Changes: 1. Shapes chart with Circle, Cross, Triangle, Square and Pentagon .
Visual Acuity Charts version 2.8.3
Updated At: 2023-09-12
Changes: Conform to new Google Play policy.
Target Android 13 (API 33)
Visual Acuity Charts version 2.8
Updated At: 2021-10-29
Changes: 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.
Visual Acuity Charts version 2.7
Updated At: 2021-04-21
Changes: * 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 telemedicine / telehealth session when the medical practitioner asks for VA scores.
* The Visual Acuity Scores screen has help content available.
Visual Acuity Charts version 2.6.1
Updated At: 2021-01-11
Changes: 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.
Visual Acuity Charts version 2.6
Updated At: 2020-11-05
Changes: Distant visual acuity eye charts include Snellen Tumbling E, Landolt C, ETDRS, HOTV and Numbers.
Disclaimer
Official Google Play Link
We do not host Visual Acuity Charts on our servers. We did not scan it for viruses, adware, spyware or other type of malware. This app is hosted by Google and passed their terms and conditions to be listed there. We recommend caution when installing it.
The Google Play link for Visual Acuity Charts is provided to you by apps112.com without any warranties, representations or guarantees of any kind, so access it at your own risk.
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