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What is Iris bombe is due to - and explain in detail?
Annular posterior synechiae (ring synechiae) are 360o adhesions of pupillary margin to anterior capsule of lens. These prevent the circulation of aqueous humour from posterior chamber to anterior chamber (seclusio pupillae). Thus, the aqueous collects behind the iris and pushes it anteriorly (leading to 'iris-bombe' formation)