The doctor said that full femtosecond and semi-femtosecond can be used. What should I choose?

As far as surgical methods are concerned, there is no difference between good and bad, and the one that suits you is the best! Since you flew here, it doesn't matter! I suggest you choose all flights. For the ghost you are worried about, the chances of the two surgical methods are the same! Generally, this probability is very small! The guarantee of postoperative effect is that you and the doctor cooperate well and the effect is the most perfect!