title: Silicone oil content in ophthalmic viscosurgical devices.
abstract: OBJECTIVE
  To examine the silicone oil content in 5 brands of ophthalmic viscoelastic devices (OVDs).
  
  
  METHODS
  Department of Ophthalmology, Central Hospital of Vasteras, Vasteras, Sweden.
  
  
  METHODS
  Phacoemulsification with intraocular lens (IOL) implantation was performed in 250 patients. Five brands of OVD were used, each one in 50 procedures. From each brand, 5 separate batches, each consisting of 10 syringes, were used. The 250 samples from identical batches were sent for spectrophotometric analysis, and 250 samples were used during surgery.
  
  
  RESULTS
  The silicone oil content varied significantly between the OVD brands.
  
  
  CONCLUSIONS
  Silicone oil is a common contaminant in many OVDs. Ophthalmic viscosurgical devices with relatively low silicone oil content are available.
authors.affiliation: Department of Ophthalmology, Central Hospital, Vasteras 72189, Sweden. arne.ohrstrom@itvastmanland.se
authors.forename: Arne
authors.initials: A
authors.lastname: Ohrstrom
authors.forename: Bengt
authors.initials: B
authors.lastname: Svensson
authors.forename: Susan
authors.initials: S
authors.lastname: Tegenfeldt
authors.forename: Celadet
authors.initials: C
authors.lastname: Celiker
authors.forename: Borje
authors.initials: B
authors.lastname: Lignell
mesh_terms: D002807:Chondroitin / Q000737:chemistry*; D002809:Chondroitin Sulfates; D004338:Drug Combinations; D006801:Humans; D006820:Hyaluronic Acid / Q000737:chemistry*; D019654:Lens Implantation, Intraocular / Q000295:instrumentation; D018918:Phacoemulsification / Q000295:instrumentation; D012827:Silicone Oils / Q000032:analysis*; D013054:Spectrophotometry, Atomic
chemical_list: D004338:Drug Combinations; D012827:Silicone Oils; C501944:chondroitin sulfate, sodium hyaluronate drug combination; D006820:Hyaluronic Acid; D002807:Chondroitin; D002809:Chondroitin Sulfates