title: [Rigid endoscope with Gradient-index lenses. Preliminary studies].
abstract: OBJECTIVE
  Endoscopes for use in ophthalmology can be manufactured in dimensions smaller than 0.89 mm.
  
  
  METHODS
  Gradient-index lenses that give a higher resolution than fiber bundles can be miniaturized down to 0.35 mm.
  
  
  RESULTS
  We used this new endoscope in 6 eyes of 6 patients during anterior segment surgery. Preliminary clinical experience has demonstrated the usefulness and practical application of this new instrument.
  
  
  CONCLUSIONS
  The clear views the instrument provides of the ciliary sulcus and ciliary body behind the iris make it useful in secondary posterior chamber intraocular lens implantation, retroprosthetic membrane behind keratoprosthesis, Molteno valve, and in endolaser photocoagulation.
authors.affiliation: Service d'Ophtalmologie, Hôtel-Dieu de Paris.
authors.forename: J M
authors.initials: JM
authors.lastname: Legeais
authors.forename: P
authors.initials: P
authors.lastname: Rol
authors.forename: B
authors.initials: B
authors.lastname: Briat
authors.forename: G
authors.initials: G
authors.lastname: Caputo
authors.forename: D
authors.initials: D
authors.lastname: Jarry
authors.forename: B
authors.initials: B
authors.lastname: Mashhour
authors.forename: D
authors.initials: D
authors.lastname: Chauvaud
authors.forename: Y
authors.initials: Y
authors.lastname: Pouliquen
authors.forename: G
authors.initials: G
authors.lastname: Renard
mesh_terms: D000368:Aged; D000369:Aged, 80 and over; D002387:Cataract Extraction / Q000379:methods*; D019723:Endoscopes; D006801:Humans; D017075:Laser Coagulation / Q000295:instrumentation; D007910:Lenses, Intraocular; D008866:Microsurgery / Q000295:instrumentation*; D019721:Ophthalmoscopes