title: Giant iris cyst with corneal perforation.
abstract: OBJECTIVE
  To report a case of a giant iris cyst with corneal perforation.
  
  
  METHODS
  A 43-year-old woman presented with repeated episodes of pain and decreased vision in her left eye for 3 years. There was no history of trauma. Slit lamp examination showed a nasal limbal corneal perforation and a mass in the anterior chamber. Based on clinical examination, B-scan ultrasonography, and anterior segment optical coherence tomography, a presumed diagnosis of anteriorly subluxated lens was made. However, intraoperatively, the patient's own crystalline lens was found behind the anterior chamber mass. Successful aspiration was performed. Histopathological examination of the aspirated material showed an iris stromal cyst. Postoperatively, the visual acuity improved and there was no recurrence of the iris cyst at the end of 12 months follow-up.
  
  
  CONCLUSIONS
  A giant iris cyst was diagnosed intraoperatively in our case. Although rare, surgeons should be aware of similar situations in cases with an unexplained anterior chamber mass.
authors.affiliation: *MD Joint International Eye Center of ShanTou University and The Chinese University of Hong Kong, ShanTou, China (all authors); and Department of Ophthalmology and Visual Sciences, The Chinese University of Hong Kong, Hong Kong, China (VJ).
authors.forename: Yong
authors.initials: Y
authors.lastname: Yao
authors.forename: Mingzhi
authors.initials: M
authors.lastname: Zhang
authors.forename: Vishal
authors.initials: V
authors.lastname: Jhanji
mesh_terms: D000328:Adult; D000867:Anterior Chamber / Q000473:pathology*; D057112:Corneal Perforation / Q000175:diagnosis* / Q000601:surgery; D003560:Cysts / Q000175:diagnosis* / Q000601:surgery; D003937:Diagnosis, Differential; D058447:Eye Pain / Q000473:pathology; D005260:Female; D006801:Humans; D007499:Iris Diseases / Q000175:diagnosis* / Q000601:surgery; D007906:Lens Subluxation / Q000175:diagnosis; D033401:Microscopy, Acoustic; D041623:Tomography, Optical Coherence; D014792:Visual Acuity