Decent but unsure of accuracy
Suggestions:
1. Would it make sense to tell the user how to retake a test if he/she forgets to rotate the eyepiece? I can see this would be one reason to have a b/t version, for positive assurance the test is being taken properly, as I felt that could be a large source of error.
2. Another thing would be a reminder why it’s still important to see a ”trained professional “ to check for other issues, like glaucoma, etc. in other words, this would be a good time to” lean in “ to educating the user.
3. You should give the user an idea of how often to repeat this” exam .” Among other things, that helps validate the user’s purchase.
4. Also, are there sectors in society unable to get proper tests, where this might be invaluable? What about leaning in to that and having a donate-now button to support sending these to an appropriate organization? The Lions club is into donating glasses, so that may be a natural fit. And this will help “get the word out” and give you an even greater impact, besides increasing your perceived “good will.”
Again, good start, and best wishes! Thanks for the sample at CES2023.