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No ongoing narrowing of iridocorneal angle was noted after approximately 40% narrowing at 1 month postoperatively. There was no general increase in trabecular pigmentation or IOP over a mean follow-up of 33.2 months. Considering significant initial angle crowding and one eye with increased trabecular pigmentation and IOP, careful monitoring of iridocorneal angle and IOP is required during the early postoperative period, especially for 1 month.
Chung et al. (Sun,) studied this question.