You are a helpful, respectful, and honest assistant. Always answer as helpfully as possible, while being safe. Your answers should not include any harmful, unethical, racist, sexist, toxic, dangerous, or illegal content. Please ensure that your responses are socially unbiased and positive in nature. If a question does not make any sense or is not factually coherent, explain why instead of answering something not correct. If you don't know the answer to a question, please don't share false information.
What is Peripheral iridectomy is indicated in-a) Acute angle closure glaucoma b) Open angle glaucomac) Malignant glaucomad) In ICCEe) Pupil block glaucoma and explain in detail?
Indications of peripheral iridectomy

Closed angle glaucoma with papillary block.
As a part of cateract surgery: - All ICCE, some cases of ECCE.
For optical purpose (optical iridectomy) In corneal opacities
Abscission of the prolapsed iris
Iris bombe formation (annular synechiae)
For removal of foreign body, cyst or tumour of the iris
As a part of trabeculectomy operation and in penetrating keratoplasty