title: A long-term follow-up study of different irrigation/aspiration techniques on formation of posterior capsule opacification.
abstract: BACKGROUND
  This study was designed to determine the effect of 2 different irrigation/aspiration techniques on the formation of posterior capsule opacification (PCO) after cataract surgery in which CeeON Edge 911A (Pharmacia, Sweden) sharp-edged silicone lenses were implanted.
  
  
  METHODS
  In this prospective study, 60 eyes from 39 patients, average age 65 (range: 46-85) years, were analyzed. Lens extraction was performed by phacoemulsification, and CeeON Edge 911A intraocular lenses were implanted. Two different irrigation/aspiration techniques were used in which the cortex of 32 eyes was removed by coaxial irrigation/aspiration (this group was designated group I) and the cortex of 28 eyes was removed by bimanual irrigation/aspiration (this group was designated group II). Secondary cataract formation and visual acuity were evaluated and compared in both groups.
  
  
  RESULTS
  The average follow-up time was 44 (SD 11) months. In group I, secondary cataract formation causing 2 lines of decrease on visual acuity was observed in 1 eye 8 months after the operation. The secondary cataract developed in the form of cortex migration. This patient was treated with laser (Neodymium: Yttrium Aluminum Garnet [Carl Zeiss Meditech, Germany]) capsulotomy at the time of detection. Best corrected visual acuity for all eyes was 0.5 and higher; postoperative refractive error ranged between +1.0 and -2.0 diopters.
  
  
  CONCLUSIONS
  Although CeeON Edge 911A silicone lenses with sharp edge prevent formation of PCO very effectively, in 1 eye in the coaxial irrigation/aspiration group, 2 lines of decrease on visual acuity were observed due to PCO. However, we did not find any significant difference between the 2 irrigation/aspiration techniques with respect to PCO formation. In terms of complete removal of the cortical material, the bimanual irrigation/aspiration technique was found to be superior to the coaxial irrigation/aspiration technique because of the better accessibility to all areas of the capsular bag.
authors.affiliation: Medicosocial Health Center, Cukurova University, Adana, Turkey. havvagul@gmail.com
authors.forename: Havva G
authors.initials: HG
authors.lastname: Ozdemir
mesh_terms: D000368:Aged; D000369:Aged, 80 and over; D002386:Cataract / Q000209:etiology* / Q000628:therapy; D005260:Female; D005500:Follow-Up Studies; D006801:Humans; D007903:Lens Capsule, Crystalline / Q000473:pathology* / Q000601:surgery; D019654:Lens Implantation, Intraocular; D007910:Lenses, Intraocular; D008297:Male; D008875:Middle Aged; D018918:Phacoemulsification; D011183:Postoperative Complications; D011446:Prospective Studies; D012826:Silicone Elastomers; D013396:Suction / Q000379:methods*; D007507:Therapeutic Irrigation / Q000379:methods*; D014792:Visual Acuity
chemical_list: D012826:Silicone Elastomers