At present, there seem to be six or seven vision treatment institutions in Nanchong, but the equipment and technology are average and the effect is not obvious. It seems that a rehabilitation center called Changhe optometry has been opened recently. Their technology is imported from America and their equipment is very advanced. My friend's child is being treated there. It's only been treated for 1 month now, and my vision has improved a lot. I'm not sure exactly how many. You can ask yourself. It seems to lie in Yinglu.