There is an active thread on the board about Proud Urology
in Korea, and they do a procedure where they claim to increase the size of the glans, but this kind of procedure does not seem to be common elsewhere at all. They do other kinds of procedures in Korea that are pretty much unheard of in the West, such as selective dorsal neurotomy to increase ejaculation time.
This procedure is extremely common in Korea, but it has been performed a lot in China too, in addition to Thailand. I was told by a professor in Russia that it has been performed a lot in Russia too, and it seems in Europe it has been performed in Spain also.
So even if some procedures are unheard of in the USA, it does not mean that elsewhere they might not have much experience with it. I am not saying this is the case with glans enlargement, but in the case of selective dorsal neurotomy, it seems about 100,000 procedures have been performed in Korea alone.
The opposite is true too however: they have no experience with PMMA
in Korea, and they use their own filler, called MegaFill. In Europe it seems Ellanse
is quite common instead; meaning that everywhere they are performing different procedures.
I believe that I read about glans enlargement in Europe before, so you could look into it there too, not only in Korea, but because it seems like there is limited experience with the procredure, it is probably best to proceeed with caution.