title: EFFECT OF BODY POSITION ON INTRAOCULAR PRESSURE IN SILICONE OIL TAMPONADE EYES.
abstract: OBJECTIVE
  To investigate the effect of body position on intraocular pressure (IOP) in silicone oil tamponade eyes.
  
  
  METHODS
  This prospective study included 18 eyes from 18 silicone oil tamponade patients and 24 eyes from 24 healthy subjects. Intraocular pressures were measured by Accupen Applanation Tonometer sitting with face forward, sitting with face down, supine, nondependent lateral decubitus, dependent lateral decubitus, and prone positions. The IOPs in each position and the magnitudes of IOP change were compared between the silicone oil and normal groups.
  
  
  RESULTS
  In both groups, the IOPs in sitting positions were significantly lower than that of each recumbent position. The IOPs were highest in prone among all positions. No significant difference was found between IOPs of each group in each position. Between both groups, the IOP elevations in each position had no statistical difference compared with sitting with face forward.
  
  
  CONCLUSIONS
  The IOP is lowest in the sitting position and highest in the prone position in both silicone oil and normal groups. Between both groups, the amount of IOP elevations is equivalent in each position compared with sitting with face forward. Ophthalmologists should be aware that IOP is higher in the prone position and that it should be monitored accordingly.
authors.affiliation: School of Optometry and Ophthalmology, Eye Hospital, Wenzhou Medical University, Wenzhou, Zhejiang, China.
authors.forename: Jiandong
authors.initials: J
authors.lastname: Pan
authors.affiliation: School of Optometry and Ophthalmology, Eye Hospital, Wenzhou Medical University, Wenzhou, Zhejiang, China.
authors.forename: Dan
authors.initials: D
authors.lastname: Cheng
authors.affiliation: School of Optometry and Ophthalmology, Eye Hospital, Wenzhou Medical University, Wenzhou, Zhejiang, China.
authors.forename: Xiaofen
authors.initials: X
authors.lastname: Feng
authors.affiliation: School of Optometry and Ophthalmology, Eye Hospital, Wenzhou Medical University, Wenzhou, Zhejiang, China.
authors.forename: Liya
authors.initials: L
authors.lastname: Zheng
authors.affiliation: School of Optometry and Ophthalmology, Eye Hospital, Wenzhou Medical University, Wenzhou, Zhejiang, China.
authors.forename: Yugui
authors.initials: Y
authors.lastname: Dong
authors.affiliation: School of Optometry and Ophthalmology, Eye Hospital, Wenzhou Medical University, Wenzhou, Zhejiang, China.|State Key Laboratory Cultivation Base and Key Laboratory of Vision Science, Ministry of Health of the People's Republic of China, Zhejiang Provincial Key Laboratory of Ophthalmology and Optometry, Wenzhou, Zhejiang, China.
authors.forename: Qiang
authors.initials: Q
authors.lastname: Hou
authors.affiliation: School of Optometry and Ophthalmology, Eye Hospital, Wenzhou Medical University, Wenzhou, Zhejiang, China.
authors.forename: Feng
authors.initials: F
authors.lastname: Chen
mesh_terms: D000328:Adult; D000368:Aged; D016022:Case-Control Studies; D058450:Endotamponade / Q000379:methods*; D005260:Female; D006801:Humans; D007429:Intraocular Pressure / Q000502:physiology*; D008297:Male; D008875:Middle Aged; D056888:Patient Positioning / Q000379:methods*; D011446:Prospective Studies; D012163:Retinal Detachment / Q000601:surgery*; D012827:Silicone Oils / Q000008:administration & dosage*; D018630:Vitreoretinopathy, Proliferative / Q000601:surgery*
chemical_list: D012827:Silicone Oils