I have tried that when I was a child. They didn't work. I had the same eyesight after doing that for a long time. There isn't any side effect of doing eye exercise as long as you follow the instructions and always keep your hands clean. I think they can help relieve eye strain other than improve eyesight. You can have a try.
I persist on doing eye exercise for 3 months, but I haven't got any satisfying result. So I think eye exercise can't help improve our eyesight. You'd better get a pair of prescription glasses to help correct your vision problems. I suggest you to have your eyesight checked in the morning than that in the afternoon because the result will be more accurate. Hope this helped!
I have tried that. It cost my dad 2 thousand Yuan to get the machine. It is said that it can help improve my eyesight because the machine provide with a kind of eye exercise. And this kind of machine was strongly recommended by my eye doctor at that time. But they do nothing to my poor vision. So be careful when you want to rely on eye exercise to improve your vision. Good luck!
It will take a long time to find any sign of improvement. And you must persist on doing it after you feel a little progress. many people give up when they sense a little progress or haven't find any result after doing it for several days or several weeks. But usually it will take at least 3 months to find a sign of improvement. And you must stick to it every day in future. Eye exercise can help relax your eye muscles. And most of them are very easy. You can learn online and this won't cost you a penny.