title: Risk factors of rhegmatogenous retinal detachment associated with choroidal detachment in Chinese patients.
abstract: OBJECTIVE
  To comprehensively analyze the risk factors of rhegmatogenous retinal detachment (RRD) associated with choroidal detachment (CD).
  
  
  METHODS
  A total of 265 eyes of 265 consecutive cases of RRD were retrospectively analyzed. All patients had systemic and ophthalmologic examination. CD was diagnosed by indirect ophthalmoscopy, B-scan ultrasonography, and ultrasound biomicroscope (UBM). Each parameter was compared between patients of RRD and rhegmatogenous retinal detachment associated with choroidal detachment (RRDCD). Logistic regression analysis was used to determine the independent risk factors of CD.
  
  
  RESULTS
  There were 52 eyes (19.62%) with CD. Pseudophakia was more commonly seen in RRDCD (21.15% vs 6.10%, P=0.002). Intraocular pressure (IOP) was lower (8.60±3.62 vs 12.96±3.55, P<0.001), best-corrected visual acuity was worse [3.00 (2.00 to 3.00) vs 1.92 (1.22 to 3.00), P=0.001], and refractive error was more myopic [-4 (-9 to -2) vs -2 (-6 to 0), P=0.007] in RRDCD. Eyes with RRDCD had larger extent of retinal detachment (P=0.007). In RRDCD, 34.62% of eyes presented with multiple holes (P=0.044) and 25.00% with macular holes (P=0.012), compared with 20.66% and 14.08% in RRD. High myopia (P=0.039), low IOP (P=0.017), and larger extent of retinal detachment (P<0.001) were significant and independent risk factors for developing CD.
  
  
  CONCLUSIONS
  For CD in RRD, related factors include BCVA, IOP, lens status, refractive error, extent of retinal detachment, number of holes, and macular hole. Larger extent of retinal detachment, high myopia, and low IOP are significant and independent risk factors.
authors: Department of Ophthalmology, Anhui Provincial Hospital affiliated to Anhui Medical University, Hefei 230001, Anhui Province, China.
authors: Yong-Hao
authors: YH
authors: Gu
authors: Department of Ophthalmology, Anhui Provincial Hospital affiliated to Anhui Medical University, Hefei 230001, Anhui Province, China.
authors: Gen-Jie
authors: GJ
authors: Ke
authors: Department of Ophthalmology, Anhui Provincial Hospital affiliated to Anhui Medical University, Hefei 230001, Anhui Province, China.
authors: Lin
authors: L
authors: Wang
authors: Department of Ophthalmology, Anhui Provincial Hospital affiliated to Anhui Medical University, Hefei 230001, Anhui Province, China.
authors: Qi-Hong
authors: QH
authors: Gu
authors: Department of Ophthalmology, Anhui Provincial Hospital affiliated to Anhui Medical University, Hefei 230001, Anhui Province, China.
authors: En-Liang
authors: EL
authors: Zhou
authors: Department of Ophthalmology, Anhui Provincial Hospital affiliated to Anhui Medical University, Hefei 230001, Anhui Province, China.
authors: Hong-Biao
authors: HB
authors: Pan
authors: Department of Ophthalmology, Anhui Provincial Hospital affiliated to Anhui Medical University, Hefei 230001, Anhui Province, China.
authors: Shi-Ying
authors: SY
authors: Wang
keywords: choroidal detachment; retinal detachment; risk factor