title: Evaluation of supporting role of a foldable capsular vitreous body with magnetic resonance imaging in the treatment of severe retinal detachment in human eyes.
abstract: OBJECTIVE
  To determine the supporting role of a novel foldable capsular vitreous body (FCVB) with magnetic resonance imaging (MRI) in the treatment of severe retinal detachment in human eyes.
  
  
  METHODS
  The study examined nine eyes of nine patients. Among the nine eyes, five had suffered penetrating injuries while four had suffered contusions of the eyeball involving large defects of the retina or choroids. A standard three-port pars plana vitrectomy was performed, FCVB was triple-folded and sent into the vitreous cavity; balanced salt solution (BSS) was injected into the capsule to support the retina. Three cardinal axes of nine eyes were examined using MRI at baseline and at the 3-month follow up.
  
  
  RESULTS
  MRI revealed that the signal intensity of the FCVB was similar to the normal vitreous body, with low-signal intensity on T1-weighted image and high-signal intensity on T2-weighted image. In three pre-operative silicone oil- or heavy silicone oil-filled eyes, FCVBs were not fully inflated, and eyeball deformation was observed in one eye. Shifts of three cardinal axes of three eyes (horizontal, anteroposterior, and vertical) according to MRI, were -4.33, -4.67, and -2.67 mm. In the remaining six eyes, FCVBs were well distributed in the vitreous cavity and evenly supported the retina; the cardinal axes of the eyes were similar to pre-operation. Shifts of three cardinal axes of six eyes were -0.34, -0.34, and -0.34 mm. In a total of nine eyes, shifts of three cardinal axes were -1.67, -1.77, and -1.11 mm. Statistically significant difference showed only between the horizontal axis of nine eyes pre-operatively and post-operatively (P1=0.041, P2=0.058, P3=0.123).
  
  
  CONCLUSIONS
  This study demonstrated the effectiveness of MRI to monitor the supporting role of an FCVB in the treatment of severe retinal detachment in human eyes.
authors.affiliation: State Key Laboratory of Oncology in Southern China, Department of Medical Imaging and Interventional Radiology, Sun Yat-sen University Cancer Center, Sun Yat-sen University, Guangzhou, China.
authors.forename: R
authors.initials: R
authors.lastname: Zhang
authors.forename: T
authors.initials: T
authors.lastname: Wang
authors.forename: C
authors.initials: C
authors.lastname: Xie
authors.forename: X
authors.initials: X
authors.lastname: Lin
authors.forename: Z
authors.initials: Z
authors.lastname: Jiang
authors.forename: Z
authors.initials: Z
authors.lastname: Wang
authors.forename: Y
authors.initials: Y
authors.lastname: Liu
authors.forename: Y
authors.initials: Y
authors.lastname: Luo
authors.forename: C
authors.initials: C
authors.lastname: Long
authors.forename: L
authors.initials: L
authors.lastname: He
authors.forename: P
authors.initials: P
authors.lastname: Wang
authors.forename: Q
authors.initials: Q
authors.lastname: Gao
mesh_terms: D000293:Adolescent; D000328:Adult; D015807:Eye Injuries, Penetrating / Q000601:surgery; D005500:Follow-Up Studies; D006801:Humans; D008279:Magnetic Resonance Imaging; D008297:Male; D008875:Middle Aged; D019736:Prostheses and Implants; D012163:Retinal Detachment / Q000175:diagnosis / Q000601:surgery*; D014792:Visual Acuity; D014821:Vitrectomy / Q000379:methods*; D014822:Vitreous Body / Q000601:surgery*; D014949:Wounds, Nonpenetrating / Q000601:surgery; D055815:Young Adult