title: Uveal effusion following acute primary angle-closure: a retrospective case series.
abstract: OBJECTIVE
  To evaluate the morphological changes in anterior segment in Chinese patients with uveal effusion (UE) after the attack of acute primary angle-closure (APAC) using ultrasound biomicroscopy (UBM), and to assess the clinical course and prognosis of the disease.
  
  
  METHODS
  In a retrospective case series, 26 eyes in 26 consecutive patients diagnosed with UE after the treatment of intraocular pressure (IOP)-lowering medication for the attack of APAC were enrolled. The unaffected fellow eyes served as controls. The morphological changes were observed by ultrasonography, slit lamp microscopy and gonioscopy. UBM was used to assess the degree and extent of effusion based on the analysis of parameters associated with UE.
  
  
  RESULTS
  The mean IOP was 9.2 (SD 2.1) mm Hg at the diagnosis of UE after IOP-lowering medication, while 14.1 (SD, 2.6) mm Hg in the fellow eyes (P=0.000). The anterior chamber depth (ACD) (P=0.000), angle opening distance at 500 µm (AOD500) (P<0.01) and anterior chamber angle (ACA) (P<0.05) were decreased significantly, while ciliary body thickness (CBT) (P<0.05) increased significantly in UE eyes. UE grade analysis showed 7 eyes in grade 1, 9 eyes in grade 2, and 10 eyes in grade 3. Quadrant scores were performed of 4 eyes in 1 quadrant, 3 eyes in 3 quadrants, and 19 eyes in 4 quadrants. There was the positive correlation between grade and quadrant score (r=0.644,P=0.000). The effusion on all eyes were recovered after medication, which mean IOP was 13.9 (SD, 2.8) mm Hg.
  
  
  CONCLUSIONS
  UE is a frequent complication in Chinese patients after the attack of APAC, partially associated with hypotony. The severity of UE is correlation with height of effusion, extent of detachment, and shallower ACD.
authors.affiliation: Xi'an Eye Hospital, Xi'an First Hospital, Xi'an 710002, Shaanxi Province, China.
authors.forename: Jian-Gang
authors.initials: JG
authors.lastname: Yang
authors.affiliation: Department of Ophthalmology, Xian XD Group Hospital, Xi'an 710077, Shaanxi Province, China.
authors.forename: Jian-Jun
authors.initials: JJ
authors.lastname: Li
authors.affiliation: Xi'an Eye Hospital, Xi'an First Hospital, Xi'an 710002, Shaanxi Province, China.
authors.forename: Hua
authors.initials: H
authors.lastname: Tian
authors.affiliation: Xi'an Eye Hospital, Xi'an First Hospital, Xi'an 710002, Shaanxi Province, China.
authors.forename: Yan-Hong
authors.initials: YH
authors.lastname: Li
authors.affiliation: Xi'an Eye Hospital, Xi'an First Hospital, Xi'an 710002, Shaanxi Province, China.
authors.forename: Yu-Jing
authors.initials: YJ
authors.lastname: Gong
authors.affiliation: Xi'an Eye Hospital, Xi'an First Hospital, Xi'an 710002, Shaanxi Province, China.
authors.forename: An-Le
authors.initials: AL
authors.lastname: Su
authors.affiliation: Department of Ophthalmology, the Second Affiliated Hospital of Xi'an Jiaotong University, Xi'an 710004, Shaanxi Province, China.
authors.forename: Na
authors.initials: N
authors.lastname: He
keywords: acute primary angle-closure; intraocular pressure; ultrasound biomicroscopy; uveal effusion