Iridectomy is the treatment of choice in certain cases of angle-closure glaucoma. Pupillary block that should be treated by iridectomy may be present in spherophakia (e.g., Weill-March-esani syndrome), in uveitic glaucoma with 360° posterior synechiae, and in nanophthalmic eyes. Pupillary block mechanisms due to lens dislocation (e.g., in Marfan's syndrome) should be primarily treated by lens extraction rather than by iridectomy. Other reasons for angle-closure glaucoma in children may be irido-ciliary cysts, hyperplastic primary vitreous, and retinopathy of prematurity .
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