FAQ

The following content is based on feedback from the Apple App Store, Google Play, and other channels.

Q: I see bedside patients, and most of them have low vision. The VA chart app I used to use is no longer supported, so I downloaded this app. It’s great because it allows me to test with numbers—most dementia patients can’t read letters, but they can still read numbers. I wish this app had 20/400 and beyond. Could you add larger optotypes?
A: If John, the patient, cannot see 20/200, he is already considered legally blind. Nevertheless, you can still test for 20/400. For example, set the app’s test distance to 10 feet, but conduct the test at 20 feet using the 20/200 optotype—the largest currently supported by the app.

Q: My toddler doesn’t know letters yet, but he does recognize shapes.
A: This eye chart app was designed for children aged six and above, as stated in the app description from day one. Testing the eyesight of preschool-aged children typically requires a pediatrician and specialized optometric equipment. Since version 2.9, the app has included a Shapes chart, but it remains intended for children over six.

Q: I rarely use metric units. It would be great if I could switch to English units.
A: If you mean imperial units (feet), you can switch them in Settings. Since version 2.9, the app defaults to imperial units when your device locale is set to the United States.

Q: I need the ability to turn off vibration, set any letter size, and display multiple letters or words at once.
A: Vibration provides feedback for successful swipes when voice hints are turned off. As of version 2.8, the app supports displaying multiple optotypes in one row (3–5 optotypes).

Q: Can you provide LEA test symbols like circles and apples?
A: LEA symbols are used in pediatric vision tests, while this app is designed for children aged 6 and above. However, for individuals who cannot read letters or numbers, the Shapes chart may still be helpful.