title: [Phacoemulsification and the negative power of intraocluar lenses in extremely myopic eyes].
abstract: OBJECTIVE
  To evaluate the clinical effects of phacoemulsification and the negative power of intraocluar lens implantation in patients with extreme myopia and cataract.
  
  
  METHODS
  89 patients (126 eyes) received phacoemulsification and a negative power intraocluar lens implantation. Preoperative axial length, postoperative visual acuity and refractive error were recorded. Intraoperative and postoperative complications were observed. The follow-up time is from 6 to 25 months.
  
  
  RESULTS
  The mean preoperative axial length is 32.45 mm. Best corrected visual acuity achieved 0.2 or better in 106 eyes (84.1%) and 0.5 or better in 69 eyes (54.8%). Of the 126 eyes, 56.3% were within 1.00 diopter (D) of refractive error and 90.5% were within an error of 2.00 D. Only 1 eye has posterior capsule rupture. 28 eyes had binocular disturbances. 15 eyes developed posterior capsule opacification and 6 eyes were performed neodymium: YAG laser posterior capsulotomy. No retinal or choroidal detachment or pressure improvement was seen during the follow-up.
  
  
  CONCLUSIONS
  It is safe and effective for extreme myopia with cataract to implant a negative power intraocular lens after phacoemulsification.
authors.affiliation: Eye & ENT Hospital of Fudan University, Shanghai 200031, China.
authors.forename: Ying-hong
authors.initials: YH
authors.lastname: Ji
authors.forename: Yi
authors.initials: Y
authors.lastname: Lu
authors.forename: Guo-sheng
authors.initials: GS
authors.lastname: Lu
authors.forename: Yi
authors.initials: Y
authors.lastname: Luo
authors.forename: Man
authors.initials: M
authors.lastname: Wang
mesh_terms: D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D002386:Cataract / Q000150:complications; D005260:Female; D005500:Follow-Up Studies; D006801:Humans; D019654:Lens Implantation, Intraocular / Q000379:methods*; D008297:Male; D008875:Middle Aged; D009216:Myopia / Q000150:complications / Q000503:physiopathology / Q000601:surgery*; D018918:Phacoemulsification / Q000379:methods*; D012029:Refraction, Ocular; D014792:Visual Acuity