You know, it makes me wonder how that works. Because most of the time, they get the prescription right, even though, for the most part, we only guess which one feels right to us, even though, to us, one and two look practically the same.
I haven't done a test since I was a child because I generally do fine, but I wonder if some people need additional instruction about what to look for. Like the two "look the same" because they don't know what to look for. Maybe just a "Is the apostrophe a line or a dot? Okay, how about now?"
One, or two, which is better? They're just questions, odd, designed to determine the optimal perscription. Shall we continue? Describe in single words, only the good things that come to mind about your eyesight.
I think part of the image processing is done subconsciously and so we can pick up the minute differences in image quality by feel, even when we can't say what exactly is different.
That makes sense. Our subconscious is better at picking up the small details than our conscious mind, because it takes more effort for us to think about it. That's why they say "go with your gut" because our brains calculate things subconsciously. It's why we can do things without thinking about it.