About Snellen Chart
Designed for children over the age of 6, parents with young children, and general practitioners, this eye chart app displays optically precise optotypes for accurate distance vision measurement. Early detection of myopia...
Designed for children over the age of 6, parents with young children, and general practitioners, this eye chart app displays optically precise optotypes for accurate distance vision measurement. Early detection of myopia allows you to take preventive action, seek medical advice promptly, and prevent pseudomyopia from worsening into true myopia or stop nearsightedness from deteriorating further.
Predefined Test Distances:
* 6, 5, 4, 3, and 2 meters
* 20, 15, 12, 10, and 6 feet
Scenarios:
1. Doctor and patient
2. Self-diagnosis using a mirror
3. Self-diagnosis using a Bluetooth keyboard
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. Autoplay
2. Manual
By enabling “Record Scores” in Settings, you can track the progression of your visual acuity. Visual acuity scores for multiple test subjects can be recorded. The Visual Acuity Score (VAS) is an inversion of the LogMAR scale, calculated as VAS = 100 − 50 × LogMAR. It is more intuitive, as higher values indicate better visual acuity.
In the score review:
- A score of 100 in blue indicates the reference standard
- Scores above 100 in green indicate no myopia
- Scores below 100 in red may indicate myopia
Myopia detection involves several steps, with distance visual acuity testing often being the first. A decline in visual acuity may indicate the onset of myopia, enabling early intervention.
Disclaimer:
While this app may replace printed eye charts, it CANNOT replace doctors or optometrists who perform comprehensive eye exams essential for maintaining eye health. The app does not test for strabismus, esotropia, exotropia, hyperopia, or astigmatism—common early vision conditions. Please consult an optometrist regularly and seek professional medical advice at the first signs of visual acuity issues.
Previous Versions
Here you can find the changelog of Snellen Chart since it was posted on our website on 2020-04-03 03:37:41.
The latest version is 2.7.1 and it was updated on 2026-06-11 02:22:29. See below the changes in each version.
Snellen Chart version 2.7.1
Updated At: 2026-04-02
Changes: 1. Support 16KB Memory Page Sizes.
2. arm64-v8a only.
3. Adjust the privacy policy to clearly state the data usage.
Snellen Chart version 2.7
Updated At: 2025-08-25
Changes: 1. Most built-in help contents are refined.
2. When the visual acuity notation is LogMAR, MAR or VAS, the scoring of the assessment is LogMAR Scoring.
Snellen Chart version 2.6.2
Updated At: 2024-09-25
Changes: 1. Bug fixed: The device back button is not having effect.
Snellen Chart version 2.6.1
Updated At: 2024-09-05
Changes: 1. Fixed bug that does not count misread sometimes when calculating score during auto play.
2. With a Bluetooth keyboard, now you can press "Enter/Return" to start/pause auto play, and Tab to stop.
3. Fix some misalign in some help screens on tablets.
Snellen Chart version 2.6
Updated At: 2024-08-15
Changes: * Target Android 14 (API level 34).
Snellen Chart version 2.5.1
Updated At: 2024-01-30
Changes: Privacy Policy link available in the About screen.
Snellen Chart version 2.4
Updated At: 2023-10-09
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.
Snellen Chart version 2.3.2
Updated At: 2023-09-12
Changes: Conform to new Google Play policy.
Target Android 13 (API 33)
Snellen Chart version 2.3.0
Updated At: 2019-11-07
Changes: Initial release.
Disclaimer
Official Google Play Link
We do not host Snellen Chart 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 Snellen Chart is provided to you by apps112.com without any warranties, representations or guarantees of any kind, so access it at your own risk.
If you have questions regarding this particular app contact the publisher directly. For questions about the functionalities of apps112.com contact us.
