Optometrist/orthoptist here... The changes in visual acuity you achieve with such eye exercises are minor and temporary. Doing eye exercises stimulates the muscles that move the eye but won't have any notable effects on decreasing myopia. Since the majority of myopia is axial (due to elongation of the eye), you can't reverse it permanently(without surgery). The changes happen mainly when your eyes go through developmental changes (childhood and puberty). If you spend time looking up close for extended periods of time, not getting enough sunlight and depriving your environment of light throughout your youth, the chance of developing myopia is much higher. Objectively measured, we can get a 0,25 D to over 1,0 D difference in results if measured at different times of the day, if your day has been different (day off from work or you've done something different). So, moreover, the minimal difference you got from the two exams is not special and it's most likely temporary. So ppl, don't get your hopes up. Challenge: have your eyes examined after you've had 2+ days of being out in nature, sightseeing, basically not looking up close and being in well lit places. Definitely rest well at night. Then take another exam after you've bingewatched something on your laptop / phone while wearing your glasses with minimal brakes for a couple of days; sleep less. See if you get a difference in the results. I have a prescription -1,5 OU (both eyes). It's been stable since I was 14. There are changes in my vision throughout the year depending on what I do. In the winter I use my -1,75 glasses because lack of daylight, longer hour indoors, etc. has an effect on my eyes. In summer I use my -1,5 glasses. Everybody's different, listen to your optometrist.