Visual Acuity Charts 4+
check and track distant vision
zijian huang
-
- 5,99 €
Screenshots
Description
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 eyechart 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.
What’s New
Version 3.2.1
* Bug fixed: After disabling app brightness, the app does not recover the device brightness.
* Bug fixed: Haptic and completion sound are not presented for swipes during eyesight checking.
Ratings and Reviews
muy bien
muy bien, práctico, preciso
Insolidarios
Es una pena que tras Intentarla promocionar para poder hacer telemedicina durante la epidemia del COVID19 de golpe la pusieran de pago ... En un momento de apoyarnos todos y no de ganar de aprovechar a ganar dinero
Dicho esto no está validada no e equivalente Y cambia con el tamaño del dispositivo móvil
Developer Response ,
UPDATE: The 42-42 Promotion is being held from 2020-04-02 to 2020-05-13 lasting for 42 days. The free installation should be permanent with future updates for the same Apple ID. After 13th May the price is back to US$4.99. There had been a 1-week promotion between 18th March and 25th March, after which the price had become normal. Similar promotions had been held occasionally a few times before. We were not aware that visual acuity test may be related to how people are dealing with the Covid-19 pandemic, however we recognize this fact now. If you have any concern please contact the developer at s@fonlow.com.
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There had been a 1 week promotion during which the purchase price was zero. App Store does not allow a free app to become a paid app, and this app has been a paid app. And you may request a refund from App Store.
App Privacy
The developer, zijian huang, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy.
Data Not Collected
The developer does not collect any data from this app.
Privacy practices may vary based on, for example, the features you use or your age. Learn More
Information
- Provider
- zijian huang
- Size
- 28.2 MB
- Category
- Medical
- Compatibility
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- iPhone
- Requires iOS 14.0 or later.
- iPad
- Requires iPadOS 14.0 or later.
- iPod touch
- Requires iOS 14.0 or later.
- Languages
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Hindi, Indonesian, Italian, Japanese, Korean, Portuguese, Russian, Simplified Chinese, Spanish, Thai, Traditional Chinese
- Age Rating
- 4+
- Copyright
- Copyright © 2018-2024 Fonlow
- Price
- 5,99 €
Supports
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Family Sharing
Up to six family members can use this app with Family Sharing enabled.