Here is a neat Application. This test can not be, "cheated". You will need a friend to "sweep" the Cell Phone, once you get it set up.
https://www.youtube.com/watch?v=ZlATq3jHHog&t=65sIt was very easy to down-load. Getting it to work up, for, "Tumbling Es" was easy.
For long-term use, a fixed Snellen, with each line marked, 20, 40, 60, 100, is the only meaningful test - you will ever have.
Going from 20/60 to 20/40, is indeed slow. A person who can not deal with, "slow" - will not be successful.
Your real objective test - is yourself.
For me, well I am wearing a +2.5 diopter as I type this, because I love to pass the 20/25 to 20/15 line, under MY CONTROL.
I know that no OD or MD has any interest - in this type of objective verification.
I congratulate Todd Becker on his success. We learn to "do things", not because I say or do anything.
We do prevention, because we believe in ourselves, and in objective science.
Best,
