title: New approach for treating vertical strabismus: decentered intraocular lenses.
abstract: OBJECTIVE
  To evaluate a new surgical procedure that uses a decentered intraocular lens (IOL) to correct vertical strabismus in cataract patients.
  
  
  METHODS
  Department of Ophthalmology, Kitasato University School of Medicine, Sagamihara, Japan.
  
  
  METHODS
  Six patients (11 eyes) with vertical strabismus had small-incision cataract surgery. The continuous curvilinear capsulorhexis was decentered, and the asymmetrical span of the IOL haptics located on the side to be bent was inserted after phacoemulsification and aspiration. Some relaxing incisions were made in the anterior capsule. Postoperatively, the alternate prism cover test was used to assess changes in ocular position. In addition, the EAS-1000 (Nidek) and KR-9000PW (Topcon) were used to evaluate IOL decentration, tilt, and aberrations.
  
  
  RESULTS
  The mean age of the patients was 66 years (range 58 to 77 years). The mean preoperative vertical strabismus was 7.3 prism diopters (PD) (range 4 to 12 PD). Two years after surgery, the mean angle of vertical deviation was 1.3 PD (range 0 to 5 PD) without affectivity coma-like aberrations (S3). The mean amount of decentration was 0.52 mm +/- 0.29 (SD) and the mean tilt, 4.30 +/- 2.85 degrees (n = 10 eyes).
  
  
  CONCLUSIONS
  Decentered IOL implantation was effective in cataract patients with vertical strabismus and can be performed during cataract surgery.
authors.affiliation: Department of Ophthalmology, Kitasato University School of Medicine, 1-15-1 Kitasato, Sagamihara, Kanagawa 228-8555, Japan. longbright0105@yahoo.co.jp
authors.forename: Hisaharu
authors.initials: H
authors.lastname: Nishimoto
authors.forename: Kimiya
authors.initials: K
authors.lastname: Shimizu
authors.forename: Hitoshi
authors.initials: H
authors.lastname: Ishikawa
authors.forename: Hiroshi
authors.initials: H
authors.lastname: Uozato
mesh_terms: D000368:Aged; D019923:Capsulorhexis / Q000379:methods; D005260:Female; D006801:Humans; D019654:Lens Implantation, Intraocular / Q000379:methods*; D007910:Lenses, Intraocular; D008297:Male; D008875:Middle Aged; D018918:Phacoemulsification / Q000379:methods*; D013285:Strabismus / Q000601:surgery*; D015348:Vision, Binocular; D014792:Visual Acuity