Unusual Presentations of Pseudophakic Pupillary Block: A Report of Two Cases.

Pseudophakic angle closure is an uncommon complication following cataract surgery. We report two cases with distinct underlying mechanisms, diagnosed through careful anterior segment evaluation and ultrasound biomicroscopy (UBM). The first case involved a patient with primary angle closure suspect (PACS) who developed a pseudophakic pupillary block due to a post-inflammatory membrane following treatment for aqueous misdirection. The second case highlighted a pupillary block induced by a Soemmerring's ring. These cases underscore the importance of early UBM use in pseudophakic eyes presenting with angle closure, as it facilitates prompt identification of the etiology and anatomical changes, guiding appropriate clinical management.