From long discussions with HansK, and others, I get the impression they think the plus is a "cure", so they visualize
only "short term" plus wearing. Science and fact show that long-term plus wearing is required. Equally, some people "cling"
to a weak minus (of -1 diopters) and can not discard it - and keep their astigmatism. For me, I would stop wearing the
minus at all - when I pass the 20/40 line. Here is a video discussing why long-term prevention is necessary.https://www.youtube.com/watch?v=iQT4kb8EI3A
This is the reason - no OD will talk to you about any "prevention" under your control.