I'm so sorry, I've heard that pupils can enlarge then eventually go back to normal, but I forgot if it was after iridotomies. I truly suggest a glaucoma specialist, possibly a fellowship trained glaucoma specialist. You do not need to have glaucoma to see one. 300 laser zaps is more than traumatic sounding to me,
I'm surprised you didn't tell him to stop, I've heard people say that it was so painful that they told the surgeon to stop with the laser.
I would get a second opinion as soon as possible . Also, if you use facebook, there is an absolutely great FB site called Glaucoma Eyes. There used to be a Narrow angle site, but I think it shut down.
Wills Eye in Philly, is a great Eye clinic/hospital? Are you close by? Unless you want to stay with your present opthalmologist, I have no other suggestions other than I really hope everything settles down soon. When I put myself in your shoes, I would definitely see someone else. Your surgeon doesn't have to know. I hope you feel better soon and your eye recovers. Hugs