title: [Clinical investigation of extrusion of a new punctal plug(Flex Plug)].
abstract: OBJECTIVE
  Punctal occlusion using punctal plugs is very effective for the treatment of tear-deficient dry eye. We compared the newly marketed Flex Plug (FP, Eagle Vision Co., Ltd.) and the Eagle Plug (EP, Eagle Vision Co., Ltd.).
  
  
  METHODS
  The subjects were patients with severe tear-deficient dry eye who were treated in our dry eye clinic. FP plugs in 8 patients (9 eyes) and EP plugs in 29 patients (35 eyes) were compared during over 4 months of observation with regard to the time until extrusion and the possibility for re-insertion of the plugs.
  
  
  RESULTS
  During the 4 months after insertion of the plugs, the EP plugs were extruded from 35 of 51 puncta (68.6%) and the FP plugs were extruded from 4 of 13 puncta (30.8%). In the 35 EP extrusions and in the 4 FP extrusions, re-insertion was possible. The time period until extrusion was longer for FP than for EP. In all cases, for both EP and FP, pyogenic granuloma was not observed.
  
  
  CONCLUSIONS
  The extrusion rate for EP plugs was much greater than for FP plugs (68.6% to 30.8%). Pyogenic granuloma was not observed in any instance for both types of punctal plugs.
authors.affiliation: Department of Ophthalmology, Kyoto Prefectural University of Medicine, 465 Kajii-cho, Hirokouji-agaru, Kawaramachi-dori, Kamigyou-ku, Kyoto 602-0841, Japan.
authors.forename: Masakazu
authors.initials: M
authors.lastname: Nishii
authors.forename: Norihiko
authors.initials: N
authors.lastname: Yokoi
authors.forename: Aoi
authors.initials: A
authors.lastname: Komuro
authors.forename: Shigeru
authors.initials: S
authors.lastname: Kinoshita
mesh_terms: D000368:Aged; D015352:Dry Eye Syndromes / Q000601:surgery*; D005260:Female; D005500:Follow-Up Studies; D006801:Humans; D007765:Lacrimal Apparatus / Q000601:surgery*; D008297:Male; D008875:Middle Aged; D019736:Prostheses and Implants; D011475:Prosthesis Failure; D019919:Prosthesis Implantation