“I look at the moon without any lighting and its size of blur fluctuates. Finally, I’ve found AF!!”
Why it’s not
I had anisocoria - my right pupil was wider than left. Then, right eye seen much blurrier despite it was a difference I guess by 1/5 of mm. Eyes begun to see equally when this gone.
So, this change is completely from variation of pupil size as you can look at mirror and see your pupil continuously adjusting its size, then you see more or less clearly depeding on this. I’ve learned how to get a control of pupil size to some extent.
It’s even dangerous!
If you will form a habit of staring at only one point, shrinking peripheral vision, you can get all sorts of eye strain, blur adaptation etc. As well, you will see your pupil shrinked to a minimum size if you will turn on the lighting and look at your mirror.
The choice is your
It’s not only an opinion, but anyway, I could be wrong. Feel free to leave your opinion!