Help Center | Patients | Perform my tests

Performing my visual acuity test

Snellen's E is a visual acuity test used to assess a person's ability to see details at different distances. It is widely used by eye care professionals to measure the accuracy of your central vision.
The test uses the capital letter "E" in different sizes and orientations. You need to identify the direction of the branches of the letter "E" for each line.

Standard version for office use

Digitized version used on OdySight

Performing my visual acuity test in OdySight

Note: the application automatically tells you which eye to test and which test to perform (the visual acuity test or the Amsler grid).

1. Open and log in to the application using your personal code
  ⚠️ you won't be able to run the test if your battery is below 15%.
2. Press Visual acuity, the application will tell you which eye to test
  👓 Be sure to wear your correction if you have one
3. Watch the demonstration, ⚠️ this is not the test. At the end, you can start the test by pressing the Medical Test button or the Training button to review the instructions once again.
4. Get ready for the test:
  - Choose good lighting with no direct light on your face or the camera
  - Stabilize your device by placing it on a stable surface. If the medical practice has provided you with the OdySight stand (blue box or easel), you can use it. Otherwise, placing a sufficiently heavy object behind your device will do the trick.
  - Position yourself correctly in front of the screen and keep your hands free
    Too far away
    
    Too close
    
    Perfect! the right distance is between 35 and 45 cm from your phone.
5. Conceal your eye with your hand or a piece of cotton or paper behind your lens ⚠️ Make sure you conceal only your eye and not part of your face. OdySight needs to detect the contours of your face
6. Use your finger to perform the test. Indicate the position of the letter E, and the test will tell you in real time whether your answer is correct.
  If you're not sure, click on the I'm not sure button. The application will automatically switch to the next letter
7. Complete your test and send the results by pressing Continue