Plateau iris syndrome 9

General: Rare; occurs in younger age group; presumably due in part to an anterior insertion of the iris; pupillary block is not a significant part of the mechanism leading to angle closure.

Ocular: Spontaneous or mydriasis-induced angle closure despite a patent iridectomy; anterior chamber is of normal depth axially and the iris e is flat, but a peripheral roll of iris can close the angle either when the pupil dilates spontaneously or after mydriatic drugs are administered.

Clinical: Nausea; vomiting.

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