title: [Hard nucleus cataract extraction by phacoemulsification with intraocular lens implantation].
abstract: OBJECTIVE
  To investigate the technique of phacoemulsification for hard nucleus cataract extraction and evaluate its therapeutic effects.
  
  
  METHODS
  Three methods of phacoemulsification, the improved divide and conquer, the reserve lens cortex spin and no lens cortex spin, were performed on 62 eyes according to the type of nucleus hardness.
  
  
  RESULTS
  With foldable or 5.5 mm PMMA intraocular lens implantation, the improved divide and conquer phacoemulsification was performed on 26 eyes, the reserve lens cortex spin phacoemulsification on 23 eyes and no cortex spin phacoemulsification on 13 eyes. At postoperative 3 days, 5 days and 30 days, the visual acuities without correction 0.5 or better were obtained respectively in 46 eyes (74.2%), 60 eyes (96.8%) and 61 eyes (98.4%). The major complications were corneal edema and posterior capsular rupture.
  
  
  CONCLUSIONS
  The technique of phacoemulsification for hard nucleus cataract is worthy to be spread due to safety, easiness and minimum complication.
authors.affiliation: Department of Ophthalmology. Affiliated Third Hospital, Sun Yat-sen University of Medical Sciences, Guangzhou 510630.
authors.forename: S
authors.initials: S
authors.lastname: Zhu
authors.forename: X
authors.initials: X
authors.lastname: Wu
authors.forename: B
authors.initials: B
authors.lastname: Xu
mesh_terms: D000368:Aged; D000369:Aged, 80 and over; D005260:Female; D006801:Humans; D019654:Lens Implantation, Intraocular / Q000009:adverse effects / Q000379:methods*; D008297:Male; D008875:Middle Aged; D018918:Phacoemulsification / Q000009:adverse effects / Q000379:methods*; D014792:Visual Acuity