This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Ophthalmology
[{'content': 'Peripheral iridectomy is indicated in-a) Acute angle closure glaucoma b) Open angle glaucomac) Malignant glaucomad) In ICCEe) Pupil block glaucoma \nSelect and explain. \nA. acd, B. ade, C. abd, D. ad', 'role': 'user'}, {'content': 'Answer: B \nExplanation: Indications of peripheral iridectomy\n\nClosed angle glaucoma with papillary block.\nAs a part of cateract surgery: - All ICCE, some cases of ECCE.\nFor optical purpose (optical iridectomy) In corneal opacities\nAbscission of the prolapsed iris\nIris bombe formation (annular synechiae)\nFor removal of foreign body, cyst or tumour of the iris\nAs a part of trabeculectomy operation and in penetrating keratoplasty', 'role': 'assistant'}]