Longshott and other friends
Frill also can be caused by PVD induced FOV like my FOV. I had FOV 15 months ago with PVD induction in my left eye. after 2 weeks Frill appeared in right side ( arc wavy shape like you and others described). since then frills had developed more in other side and more into my central vision. one months ago they faded a little . but i've decided to go for second fov.
based on other user and surgeons opinions i think frill is caused by little peripheral vitreous shaving and because of this it not depends on PVD induction. you can see other user experience especially user Kram case.
maybe next weeks I will have my second FOV. :)